diff --git a/frontend/src/components/ButtonComponent.tsx b/frontend/src/components/ButtonComponent.tsx
index a796b73..fabdda3 100644
--- a/frontend/src/components/ButtonComponent.tsx
+++ b/frontend/src/components/ButtonComponent.tsx
@@ -1,6 +1,7 @@
 import React, { useEffect, useRef } from 'react';
 import { ToggleButton } from 'react-bootstrap';
 import { DocStringComponent } from './DocStringComponent';
+import { SerializedValue } from './GenericComponent';
 import { LevelName } from './NotificationsComponent';
 
 type ButtonComponentProps = {
@@ -10,12 +11,7 @@ type ButtonComponentProps = {
   docString: string;
   mapping?: [string, string]; // Enforce a tuple of two strings
   addNotification: (message: string, levelname?: LevelName) => void;
-  changeCallback?: (
-    value: unknown,
-    attributeName?: string,
-    prefix?: string,
-    callback?: (ack: unknown) => void
-  ) => void;
+  changeCallback?: (value: SerializedValue, callback?: (ack: unknown) => void) => void;
   displayName: string;
   id: string;
 };
diff --git a/frontend/src/components/NumberComponent.tsx b/frontend/src/components/NumberComponent.tsx
index 6763ae1..9504e94 100644
--- a/frontend/src/components/NumberComponent.tsx
+++ b/frontend/src/components/NumberComponent.tsx
@@ -3,6 +3,7 @@ import { Form, InputGroup } from 'react-bootstrap';
 import { DocStringComponent } from './DocStringComponent';
 import '../App.css';
 import { LevelName } from './NotificationsComponent';
+import { SerializedValue } from './GenericComponent';
 
 // TODO: add button functionality
 
@@ -38,12 +39,7 @@ type NumberComponentProps = {
   isInstantUpdate: boolean;
   unit?: string;
   addNotification: (message: string, levelname?: LevelName) => void;
-  changeCallback?: (
-    value: unknown,
-    attributeName?: string,
-    prefix?: string,
-    callback?: (ack: unknown) => void
-  ) => void;
+  changeCallback?: (value: SerializedValue, callback?: (ack: unknown) => void) => void;
   displayName?: string;
   id: string;
 };
@@ -249,7 +245,12 @@ export const NumberComponent = React.memo((props: NumberComponentProps) => {
         selectionEnd
       ));
     } else if (key === 'Enter' && !isInstantUpdate) {
-      changeCallback(Number(newValue));
+      changeCallback({
+        type: type,
+        value: Number(newValue),
+        full_access_path: fullAccessPath,
+        readonly: true
+      });
       return;
     } else {
       console.debug(key);
@@ -258,7 +259,12 @@ export const NumberComponent = React.memo((props: NumberComponentProps) => {
 
     // Update the input value and maintain the cursor position
     if (isInstantUpdate) {
-      changeCallback(Number(newValue));
+      changeCallback({
+        type: type,
+        value: Number(newValue),
+        full_access_path: fullAccessPath,
+        readonly: true
+      });
     }
 
     setInputString(newValue);
@@ -270,7 +276,12 @@ export const NumberComponent = React.memo((props: NumberComponentProps) => {
   const handleBlur = () => {
     if (!isInstantUpdate) {
       // If not in "instant update" mode, emit an update when the input field loses focus
-      changeCallback(Number(inputString));
+      changeCallback({
+        type: type,
+        value: Number(inputString),
+        full_access_path: fullAccessPath,
+        readonly: true
+      });
     }
   };
   useEffect(() => {
diff --git a/frontend/src/components/SliderComponent.tsx b/frontend/src/components/SliderComponent.tsx
index 9296cfc..5cb003e 100644
--- a/frontend/src/components/SliderComponent.tsx
+++ b/frontend/src/components/SliderComponent.tsx
@@ -4,6 +4,7 @@ import { DocStringComponent } from './DocStringComponent';
 import { Slider } from '@mui/material';
 import { NumberComponent, NumberObject } from './NumberComponent';
 import { LevelName } from './NotificationsComponent';
+import { SerializedValue } from './GenericComponent';
 
 type SliderComponentProps = {
   fullAccessPath: string;
@@ -15,12 +16,7 @@ type SliderComponentProps = {
   stepSize: NumberObject;
   isInstantUpdate: boolean;
   addNotification: (message: string, levelname?: LevelName) => void;
-  changeCallback?: (
-    value: unknown,
-    attributeName?: string,
-    prefix?: string,
-    callback?: (ack: unknown) => void
-  ) => void;
+  changeCallback?: (value: SerializedValue, callback?: (ack: unknown) => void) => void;
   displayName: string;
   id: string;
 };
@@ -68,11 +64,25 @@ export const SliderComponent = React.memo((props: SliderComponentProps) => {
     if (Array.isArray(newNumber)) {
       newNumber = newNumber[0];
     }
-    changeCallback(newNumber, `${name}.value`);
+    changeCallback({
+      type: value.type,
+      value: newNumber,
+      full_access_path: `${fullAccessPath}.value`,
+      readonly: value.readonly
+    });
   };
 
-  const handleValueChange = (newValue: number, valueType: string) => {
-    changeCallback(newValue, `${name}.${valueType}`);
+  const handleValueChange = (
+    newValue: number,
+    name: string,
+    valueObject: NumberObject
+  ) => {
+    changeCallback({
+      type: valueObject.type,
+      value: newValue,
+      full_access_path: `${fullAccessPath}.${name}`,
+      readonly: valueObject.readonly
+    });
   };
 
   const deconstructNumberDict = (
@@ -137,7 +147,7 @@ export const SliderComponent = React.memo((props: SliderComponentProps) => {
             value={valueMagnitude}
             unit={valueUnit}
             addNotification={() => {}}
-            changeCallback={(value) => changeCallback(value, name + '.value')}
+            changeCallback={changeCallback}
             id={id + '-value'}
           />
         </Col>
@@ -175,7 +185,7 @@ export const SliderComponent = React.memo((props: SliderComponentProps) => {
                 type="number"
                 value={minMagnitude}
                 disabled={minReadOnly}
-                onChange={(e) => handleValueChange(Number(e.target.value), 'min')}
+                onChange={(e) => handleValueChange(Number(e.target.value), 'min', min)}
               />
             </Col>
 
@@ -185,7 +195,7 @@ export const SliderComponent = React.memo((props: SliderComponentProps) => {
                 type="number"
                 value={maxMagnitude}
                 disabled={maxReadOnly}
-                onChange={(e) => handleValueChange(Number(e.target.value), 'max')}
+                onChange={(e) => handleValueChange(Number(e.target.value), 'max', max)}
               />
             </Col>
 
@@ -195,7 +205,9 @@ export const SliderComponent = React.memo((props: SliderComponentProps) => {
                 type="number"
                 value={stepSizeMagnitude}
                 disabled={stepSizeReadOnly}
-                onChange={(e) => handleValueChange(Number(e.target.value), 'step_size')}
+                onChange={(e) =>
+                  handleValueChange(Number(e.target.value), 'step_size', stepSize)
+                }
               />
             </Col>
           </Row>
diff --git a/frontend/src/components/StringComponent.tsx b/frontend/src/components/StringComponent.tsx
index ad56809..00f538a 100644
--- a/frontend/src/components/StringComponent.tsx
+++ b/frontend/src/components/StringComponent.tsx
@@ -3,6 +3,7 @@ import { Form, InputGroup } from 'react-bootstrap';
 import { DocStringComponent } from './DocStringComponent';
 import '../App.css';
 import { LevelName } from './NotificationsComponent';
+import { SerializedValue } from './GenericComponent';
 
 // TODO: add button functionality
 
@@ -13,12 +14,7 @@ type StringComponentProps = {
   docString: string;
   isInstantUpdate: boolean;
   addNotification: (message: string, levelname?: LevelName) => void;
-  changeCallback?: (
-    value: unknown,
-    attributeName?: string,
-    prefix?: string,
-    callback?: (ack: unknown) => void
-  ) => void;
+  changeCallback?: (value: SerializedValue, callback?: (ack: unknown) => void) => void;
   displayName: string;
   id: string;
 };
@@ -59,14 +55,24 @@ export const StringComponent = React.memo((props: StringComponentProps) => {
 
   const handleKeyDown = (event) => {
     if (event.key === 'Enter' && !isInstantUpdate) {
-      changeCallback(inputString);
+      changeCallback({
+        type: 'str',
+        value: inputString,
+        full_access_path: fullAccessPath,
+        readonly: true
+      });
       event.preventDefault();
     }
   };
 
   const handleBlur = () => {
     if (!isInstantUpdate) {
-      changeCallback(inputString);
+      changeCallback({
+        type: 'str',
+        value: inputString,
+        full_access_path: fullAccessPath,
+        readonly: true
+      });
     }
   };