> ## Documentation Index
> Fetch the complete documentation index at: https://notevil.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# CAPLfunctionIso11783OPChangeSoftKeyMask

# Iso11783OPChangeSoftKeyMask

[Valid for](../../../../Shared/FeatureAvailability.md): CANoe DE • CANoe4SW DE

## Function Syntax

```plaintext theme={null}
long Iso11783OPChangeSoftKeyMask( dword ecuHandle, 
 dword maskID, dword softKeyMaskID );
```

## Description

The function changes the soft key mask of a data mask. A **Change Soft Key Mask** command is sent to the Virtual Terminal.

## Parameters

* **ecuHandle**: Handle of the ECU (must be created with [Iso11783CreateECU](CAPLfunctionIso11783CreateECU.md))
* **maskID**: Object ID of the data mask
* **softkeyMaskID**: Object ID of the data mask

## Return Values

0 or [error code](../CAPLfunctionsISONLErrorCodes.md)

## Example

```plaintext theme={null}
Iso11783OPChangeSoftKeyMask( handle, 1000, 1050 );
```