diff --git a/CHANGELOG.md b/CHANGELOG.md
index 860abb0..27028e5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - show error message on homepage in case there is a problem with api connection
 - new slider field type
 - new card layout for forms
+- field logic
 
 ### Changed
 
diff --git a/components/form/admin/field.card.tsx b/components/form/admin/field.card.tsx
index 49b24a5..99ad9b3 100644
--- a/components/form/admin/field.card.tsx
+++ b/components/form/admin/field.card.tsx
@@ -1,10 +1,22 @@
-import { DeleteOutlined } from '@ant-design/icons/lib'
-import { Button, Card, Checkbox, Form, Input, Popconfirm, Popover, Tag } from 'antd'
+import { DeleteOutlined, PlusOutlined } from '@ant-design/icons/lib'
+import {
+  Button,
+  Card,
+  Checkbox,
+  Form,
+  Input,
+  Popconfirm,
+  Popover,
+  Space,
+  Tag,
+  Tooltip,
+} from 'antd'
 import { FormInstance } from 'antd/lib/form'
 import { FieldData } from 'rc-field-form/lib/interface'
-import React, { useEffect, useState } from 'react'
+import React, { useCallback, useEffect, useState } from 'react'
 import { useTranslation } from 'react-i18next'
-import { FormFieldFragment } from '../../../graphql/fragment/form.fragment'
+import { FormFieldFragment, FormFieldLogicFragment } from '../../../graphql/fragment/form.fragment'
+import { LogicBlock } from './logic.block'
 import { adminTypes } from './types'
 import { TextType } from './types/text.type'
 
@@ -47,12 +59,57 @@ export const FieldCard: React.FC<Props> = (props) => {
     return () => clearTimeout(id)
   }, [nextTitle])
 
+  const addLogic = useCallback((add: (defaults: unknown) => void, index: number) => {
+    return (
+      <Form.Item wrapperCol={{ span: 24 }}>
+        <Space
+          style={{
+            width: '100%',
+            justifyContent: 'flex-end',
+          }}
+        >
+          <Button
+            type="dashed"
+            onClick={() => {
+              const defaults: FormFieldLogicFragment = {
+                id: `NEW-${Date.now()}`,
+                formula: null,
+                action: null,
+                jumpTo: null,
+                visible: null,
+                disable: null,
+                require: null,
+                enabled: false,
+              }
+
+              add(defaults)
+            }}
+          >
+            <PlusOutlined /> {t('form:logic.add')}
+          </Button>
+        </Space>
+      </Form.Item>
+    )
+  }, [])
+
   return (
     <Card
-      title={nextTitle}
+      title={<Tooltip title={`@${field.name as string}`}>nextTitle</Tooltip>}
       type={'inner'}
       extra={
         <div>
+          <Form.Item noStyle shouldUpdate>
+            {() => {
+              // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+              const slug = form.getFieldValue(['form', 'fields', field.name as string, 'slug'])
+
+              if (!slug) {
+                return null
+              }
+
+              return <Tag color={'warning'}>Slug: {slug}</Tag>
+            }}
+          </Form.Item>
           <Popover
             placement={'left'}
             content={
@@ -90,7 +147,6 @@ export const FieldCard: React.FC<Props> = (props) => {
           </Popconfirm>
         </div>
       }
-      actions={[<DeleteOutlined key={'delete'} onClick={() => remove(index)} />]}
     >
       <Form.Item name={[field.name as string, 'type']} noStyle>
         <Input type={'hidden'} />
@@ -122,6 +178,35 @@ export const FieldCard: React.FC<Props> = (props) => {
       </Form.Item>
 
       <TypeComponent field={field} form={form} />
+
+      <Form.List name={[field.name as string, 'logic']}>
+        {(logic, { add, remove, move }) => {
+          const addAndMove = (index) => (defaults) => {
+            add(defaults)
+            move(fields.length, index)
+          }
+
+          return (
+            <div>
+              {addLogic(addAndMove(0), 0)}
+              {logic.map((field, index) => (
+                <div key={field.key}>
+                  <Form.Item wrapperCol={{ span: 24 }} noStyle>
+                    <LogicBlock
+                      field={field}
+                      form={form}
+                      fields={fields}
+                      index={index}
+                      remove={remove}
+                    />
+                  </Form.Item>
+                  {addLogic(addAndMove(index + 1), index + 1)}
+                </div>
+              ))}
+            </div>
+          )
+        }}
+      </Form.List>
     </Card>
   )
 }
diff --git a/components/form/admin/logic.block.tsx b/components/form/admin/logic.block.tsx
new file mode 100644
index 0000000..95d3eb5
--- /dev/null
+++ b/components/form/admin/logic.block.tsx
@@ -0,0 +1,198 @@
+import { DeleteOutlined } from '@ant-design/icons'
+import { Alert, Button, Checkbox, Form, Mentions, Popconfirm, Select } from 'antd'
+import { FormInstance } from 'antd/lib/form'
+import { FieldData } from 'rc-field-form/lib/interface'
+import React from 'react'
+import { useTranslation } from 'react-i18next'
+import { FormFieldFragment } from '../../../graphql/fragment/form.fragment'
+import { useMath } from '../../use.math'
+
+interface Props {
+  form: FormInstance
+  fields: FormFieldFragment[]
+  field: FieldData
+  remove: (index: number) => void
+  index: number
+}
+
+export const LogicBlock: React.FC<Props> = (props) => {
+  const { t } = useTranslation()
+  const { form, field, fields, remove, index } = props
+  const evaluator = useMath()
+
+  return (
+    <div
+      style={{
+        borderRight: '5px solid #DDD',
+        paddingRight: 10,
+      }}
+    >
+      <Form.Item
+        name={[field.name as string, 'formula']}
+        labelCol={{ span: 6 }}
+        label={'Formula'}
+        rules={[{ required: true, message: 'combine other fields' }]}
+        extra={'Save form to get new IDs and slugs'}
+      >
+        <Mentions rows={1}>
+          {fields.map((field) => (
+            <Mentions.Option key={field.id} value={field.id}>
+              {field.title}
+            </Mentions.Option>
+          ))}
+        </Mentions>
+      </Form.Item>
+
+      <Form.Item noStyle shouldUpdate>
+        {(form) => {
+          try {
+            const defaults = {}
+
+            fields.forEach((field) => {
+              defaults[`@${field.id}`] = field.value
+
+              if (field.slug) {
+                defaults[`$${field.slug}`] = field.value
+              }
+            })
+
+            const result = evaluator(
+              form.getFieldValue([...form.prefixName, field.name as string, 'formula']),
+              defaults
+            )
+
+            return (
+              <Alert
+                type={result ? 'success' : 'warning'}
+                message={
+                  result
+                    ? 'would trigger action with current default values'
+                    : 'would NOT trigger action with current default values'
+                }
+                style={{ marginBottom: 24 }}
+              />
+            )
+          } catch (e) {
+            return <Alert message={e.message} type={'error'} style={{ marginBottom: 24 }} />
+          }
+        }}
+      </Form.Item>
+      <Form.Item name={[field.name as string, 'action']} labelCol={{ span: 6 }} label={'Action'}>
+        <Select
+          options={[
+            {
+              value: 'jumpTo',
+              label: t('form:logic.action.jumpTo'),
+            },
+            {
+              value: 'visible',
+              label: t('form:logic.action.visible'),
+            },
+            {
+              value: 'disable',
+              label: t('form:logic.action.disable'),
+            },
+            {
+              value: 'require',
+              label: t('form:logic.action.require'),
+            },
+          ]}
+        />
+      </Form.Item>
+      <Form.Item noStyle shouldUpdate>
+        {(form) => (
+          <Form.Item
+            hidden={
+              form.getFieldValue([...form.prefixName, field.name as string, 'action']) !== 'jumpTo'
+            }
+            labelCol={{ span: 6 }}
+            label={t('form:logic.action.jumpTo')}
+            rules={[{ required: true, message: 'Jump target is required' }]}
+            extra={'after selecting field (works best with clickable values)'}
+          >
+            <Select
+              options={fields
+                .filter((field) => !/NEW/i.test(field.id))
+                .map((field) => ({
+                  value: field.id,
+                  label: field.title,
+                }))}
+            />
+          </Form.Item>
+        )}
+      </Form.Item>
+
+      <Form.Item noStyle shouldUpdate>
+        {(form) => (
+          <Form.Item
+            hidden={
+              form.getFieldValue([...form.prefixName, field.name as string, 'action']) !== 'visible'
+            }
+            initialValue={true}
+            labelCol={{ span: 6 }}
+            label={t('form:logic.action.visible')}
+            valuePropName={'checked'}
+            getValueFromEvent={(checked: boolean) => (checked ? '1' : '')}
+            getValueProps={(e: string) => ({ checked: !!e })}
+          >
+            <Checkbox />
+          </Form.Item>
+        )}
+      </Form.Item>
+
+      <Form.Item noStyle shouldUpdate>
+        {(form) => (
+          <Form.Item
+            hidden={
+              form.getFieldValue([...form.prefixName, field.name as string, 'action']) !== 'disable'
+            }
+            initialValue={false}
+            labelCol={{ span: 6 }}
+            label={t('form:logic.action.disable')}
+            valuePropName={'checked'}
+            getValueFromEvent={(checked: boolean) => (checked ? '1' : '')}
+            getValueProps={(e: string) => ({ checked: !!e })}
+          >
+            <Checkbox />
+          </Form.Item>
+        )}
+      </Form.Item>
+
+      <Form.Item noStyle shouldUpdate>
+        {(form) => (
+          <Form.Item
+            hidden={
+              form.getFieldValue([...form.prefixName, field.name as string, 'action']) !== 'require'
+            }
+            initialValue={true}
+            labelCol={{ span: 6 }}
+            label={t('form:logic.action.require')}
+            valuePropName={'checked'}
+            getValueFromEvent={(checked: boolean) => (checked ? '1' : '')}
+            getValueProps={(e: string) => ({ checked: !!e })}
+          >
+            <Checkbox />
+          </Form.Item>
+        )}
+      </Form.Item>
+
+      <Form.Item>
+        <div style={{ textAlign: 'right' }}>
+          <Popconfirm
+            placement={'right'}
+            title={t('type:confirmDelete')}
+            okText={t('type:deleteNow')}
+            okButtonProps={{ danger: true }}
+            onConfirm={() => {
+              remove(index)
+            }}
+          >
+            <Button danger>
+              <DeleteOutlined />
+            </Button>
+          </Popconfirm>
+        </div>
+      </Form.Item>
+    </div>
+  )
+}
diff --git a/components/use.math.ts b/components/use.math.ts
new file mode 100644
index 0000000..ac9c66a
--- /dev/null
+++ b/components/use.math.ts
@@ -0,0 +1,29 @@
+import { all, create } from 'mathjs'
+import { useState } from 'react'
+
+export const useMath = (): ((
+  expression: string,
+  values?: { [id: string]: string | number }
+) => boolean) => {
+  const [math] = useState(create(all, {}))
+
+  return (expression, values) => {
+    try {
+      let processed = expression
+
+      Object.keys(values).forEach((key) => {
+        const r = new RegExp(key.replace('$', '\\$'), 'ig')
+
+        if (r.test(processed)) {
+          processed = processed.replace(r, String(values[key]))
+        }
+      })
+
+      const result = math.evaluate(processed)
+
+      return Boolean(result)
+    } catch (e) {
+      throw e
+    }
+  }
+}
diff --git a/locales/en/form.json b/locales/en/form.json
index ce99762..8f74af7 100644
--- a/locales/en/form.json
+++ b/locales/en/form.json
@@ -56,6 +56,15 @@
   },
   "hooksTab": "WebHooks",
   "loading": "Loading Form",
+  "logic": {
+    "add": "Add Logic",
+    "action": {
+      "jumpTo": "Jump To",
+      "visible": "Visible",
+      "disable": "Disable",
+      "require": "Require"
+    }
+  },
   "mange": "Edit Form \"{{title}}\"",
   "new": "New Form",
   "next": "Next",
diff --git a/package.json b/package.json
index d0e5def..20f4055 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,7 @@
     "i18next": "^19.9.2",
     "i18next-browser-languagedetector": "^6.1.0",
     "isomorphic-fetch": "^3.0.0",
+    "mathjs": "^9.3.2",
     "next": "^10.2.0",
     "next-images": "^1.7.0",
     "next-redux-wrapper": "^6.0.2",
@@ -47,6 +48,7 @@
   "devDependencies": {
     "@types/axios": "^0.14.0",
     "@types/lifeomic__axios-fetch": "^1.5.0",
+    "@types/mathjs": "^6.0.12",
     "@types/node": "^14.14.43",
     "@types/node-fetch": "^2.5.10",
     "@types/react": "^17.0.4",
diff --git a/yarn.lock b/yarn.lock
index e30bf23..cb33551 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -409,6 +409,13 @@
     "@types/node-fetch" "*"
     axios "^0.21.0"
 
+"@types/mathjs@^6.0.12":
+  version "6.0.12"
+  resolved "https://registry.yarnpkg.com/@types/mathjs/-/mathjs-6.0.12.tgz#1c2a60352852676e10936ce150b9500d36555973"
+  integrity sha512-bpKs8CDJ0aOiiJguywryE/U6Wre/uftJ89xhp4aCgF4oRb3Yug2VyZ87958gmSeq4WMsvWPMs2Q5TtFv+dJtaA==
+  dependencies:
+    decimal.js "^10.0.0"
+
 "@types/node-fetch@*":
   version "2.5.7"
   resolved "https://registry.yarnpkg.com/@types/node-fetch/-/node-fetch-2.5.7.tgz#20a2afffa882ab04d44ca786449a276f9f6bbf3c"
@@ -1291,6 +1298,11 @@ commondir@^1.0.1:
   resolved "https://registry.yarnpkg.com/commondir/-/commondir-1.0.1.tgz#ddd800da0c66127393cca5950ea968a3aaf1253b"
   integrity sha1-3dgA2gxmEnOTzKWVDqloo6rxJTs=
 
+complex.js@^2.0.11:
+  version "2.0.13"
+  resolved "https://registry.yarnpkg.com/complex.js/-/complex.js-2.0.13.tgz#00cf7ba082565e164813b7bbbb0ced5d2aba172a"
+  integrity sha512-UEWd3G3/kd3lJmsdLsDh9qfinJlujL4hIFn3Vo4/G5eqehPsgCHf2CLhFs77tVkOp2stt/jbNit7Q1XFANFltA==
+
 compress-commons@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/compress-commons/-/compress-commons-4.0.2.tgz#d6896be386e52f37610cef9e6fa5defc58c31bd7"
@@ -1507,6 +1519,11 @@ debug@^4.0.1, debug@^4.1.0, debug@^4.1.1:
   dependencies:
     ms "^2.1.1"
 
+decimal.js@^10.0.0, decimal.js@^10.2.1:
+  version "10.2.1"
+  resolved "https://registry.yarnpkg.com/decimal.js/-/decimal.js-10.2.1.tgz#238ae7b0f0c793d3e3cea410108b35a2c01426a3"
+  integrity sha512-KaL7+6Fw6i5A2XSnsbhm/6B+NuEA7TZ4vqxnd5tXz9sbKtrN9Srj8ab4vKVdK8YAqZO9P1kg45Y6YLoduPf+kw==
+
 deep-is@^0.1.3:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
@@ -1753,6 +1770,11 @@ escalade@^3.1.1:
   resolved "https://registry.yarnpkg.com/escalade/-/escalade-3.1.1.tgz#d8cfdc7000965c5a0174b4a82eaa5c0552742e40"
   integrity sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw==
 
+escape-latex@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/escape-latex/-/escape-latex-1.2.0.tgz#07c03818cf7dac250cce517f4fda1b001ef2bca1"
+  integrity sha512-nV5aVWW1K0wEiUIEdZ4erkGGH8mDxGyxSeqPzRNtWP7ataw+/olFObw7hujFWlVjNsaDFw5VZ5NzVSIqRgfTiw==
+
 escape-string-regexp@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
@@ -2110,6 +2132,11 @@ form-data@^3.0.0:
     combined-stream "^1.0.8"
     mime-types "^2.1.12"
 
+fraction.js@^4.0.13:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/fraction.js/-/fraction.js-4.1.0.tgz#229ec1cedc8c3c7e5d2d20688ba64f0a43af5830"
+  integrity sha512-o9lSKpK0TDqDwTL24Hxqi6I99s942l6TYkfl6WvGWgLOIFz/YonSGKfiSeMadoiNvTfqnfOa9mjb5SGVbBK9/w==
+
 fs-constants@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fs-constants/-/fs-constants-1.0.0.tgz#6be0de9be998ce16af8afc24497b9ee9b7ccd9ad"
@@ -2646,6 +2673,11 @@ isomorphic-fetch@^3.0.0:
     node-fetch "^2.6.1"
     whatwg-fetch "^3.4.1"
 
+javascript-natural-sort@^0.7.1:
+  version "0.7.1"
+  resolved "https://registry.yarnpkg.com/javascript-natural-sort/-/javascript-natural-sort-0.7.1.tgz#f9e2303d4507f6d74355a73664d1440fb5a0ef59"
+  integrity sha1-+eIwPUUH9tdDVac2ZNFED7Wg71k=
+
 jest-worker@27.0.0-next.5:
   version "27.0.0-next.5"
   resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-27.0.0-next.5.tgz#5985ee29b12a4e191f4aae4bb73b97971d86ec28"
@@ -2925,6 +2957,20 @@ material-colors@^1.2.1:
   resolved "https://registry.yarnpkg.com/material-colors/-/material-colors-1.2.6.tgz#6d1958871126992ceecc72f4bcc4d8f010865f46"
   integrity sha512-6qE4B9deFBIa9YSpOc9O0Sgc43zTeVYbgDT5veRKSlB2+ZuHNoVVxA1L/ckMUayV9Ay9y7Z/SZCLcGteW9i7bg==
 
+mathjs@^9.3.2:
+  version "9.3.2"
+  resolved "https://registry.yarnpkg.com/mathjs/-/mathjs-9.3.2.tgz#6523dd5c963d200ff1cea0ff7963b10521b82185"
+  integrity sha512-0YKSKAeN9OkbIQrxfxnBT4kk/KlH71piWOsvVvAasyRIj/Xd/zlpc5VP/aFxwr+llOq2F3f6booPEu2fWv3yjQ==
+  dependencies:
+    complex.js "^2.0.11"
+    decimal.js "^10.2.1"
+    escape-latex "^1.2.0"
+    fraction.js "^4.0.13"
+    javascript-natural-sort "^0.7.1"
+    seedrandom "^3.0.5"
+    tiny-emitter "^2.1.0"
+    typed-function "^2.0.0"
+
 md5.js@^1.3.4:
   version "1.3.5"
   resolved "https://registry.yarnpkg.com/md5.js/-/md5.js-1.3.5.tgz#b5d07b8e3216e3e27cd728d72f70d1e6a342005f"
@@ -4272,6 +4318,11 @@ scroll-into-view-if-needed@^2.2.25:
   dependencies:
     compute-scroll-into-view "^1.0.14"
 
+seedrandom@^3.0.5:
+  version "3.0.5"
+  resolved "https://registry.yarnpkg.com/seedrandom/-/seedrandom-3.0.5.tgz#54edc85c95222525b0c7a6f6b3543d8e0b3aa0a7"
+  integrity sha512-8OwmbklUNzwezjGInmZ+2clQmExQPvomqjL7LFqOYqtmuxRgQYqOD3mHaU+MvZn5FLUeVxVfQjwLZW/n/JFuqg==
+
 semver@^6.0.0:
   version "6.3.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
@@ -4658,6 +4709,11 @@ timers-browserify@^2.0.4:
   dependencies:
     setimmediate "^1.0.4"
 
+tiny-emitter@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/tiny-emitter/-/tiny-emitter-2.1.0.tgz#1d1a56edfc51c43e863cbb5382a72330e3555423"
+  integrity sha512-NB6Dk1A9xgQPMoGqC5CVXn123gWyte215ONT5Pp5a0yt4nlEoO1ZWeCwpncaekPHXO60i47ihFnZPiRPjRMq4Q==
+
 tinycolor2@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/tinycolor2/-/tinycolor2-1.4.1.tgz#f4fad333447bc0b07d4dc8e9209d8f39a8ac77e8"
@@ -4797,6 +4853,11 @@ type-fest@^0.8.1:
   resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.8.1.tgz#09e249ebde851d3b1e48d27c105444667f17b83d"
   integrity sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==
 
+typed-function@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/typed-function/-/typed-function-2.0.0.tgz#15ab3825845138a8b1113bd89e60cd6a435739e8"
+  integrity sha512-Hhy1Iwo/e4AtLZNK10ewVVcP2UEs408DS35ubP825w/YgSBK1KVLwALvvIG4yX75QJrxjCpcWkzkVRB0BwwYlA==
+
 typescript@^4.2.4:
   version "4.2.4"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.4.tgz#8610b59747de028fda898a8aef0e103f156d0961"