# fsVarsUnregisterAllVarsStatusUpdateHandler<no value>
The **fsVarsUnregisterAllVarsStatusUpdateHandler** function can be used to unregister all handlers previously registered with [fsVarsRegisterVarsStatusUpdateHandler](fsvarsregistervarsstatusupdatehandler/).

 

##### Syntax

``` wasm
FsVarError fsVarsUnregisterAllVarsStatusUpdateHandler();
```

 

##### Parameters

N/A

 

##### Return Values

The function returns `FsVarError`, where 0 means there is no error (in which case the handler will be called each time the simulation needs to notify a change in the variables).

 

##### Example

``` wasm
extern "C" MSFS_CALLBACK void module_deinit()
{
    FsVarError err = fsVarsUnregisterAllVarsStatusUpdateHandler();
    if (err != FS_VAR_ERROR_NONE)
    {
        // Error
    }
}
```