Broadcast receiver change UI

I have searched widely but not found an answer to this question:
Is it possible to change a variable in a Jetpack compose user interface from a broadcast receiver?

You can make use of DisposableEffect and LocalContext.current for register and unregister your BroadcastReceiver in compose. Remeber to use rememberUpdatedState for keep an updated reference to the lambda

Here is an example of a generic BroadcastReceiver in compose

@Composable
fun SystemBroadcastReceiver(
    systemAction: String,
    onSystemEvent: (intent: Intent?) -> Unit
) {
    val context = LocalContext.current

    val currentOnSystemEvent by rememberUpdatedState( onSystemEvent )

    DisposableEffect(context, systemAction){

        val intentFilter = IntentFilter( systemAction )

        val receiver = object : BroadcastReceiver(){
            override fun onReceive(context: Context?, intent: Intent?) {
                currentOnSystemEvent( intent )
            }
        }

        context.registerReceiver( receiver, intentFilter)

        onDispose {
            context.unregisterReceiver(receiver)
        }
    }
}

Here is an example of how I used it to extract an OTP:

// this is the value I want to change
var myOtp : String by remember{ mutableStateOf("") }

SystemBroadcastReceiver(systemAction = SMS_RETRIEVED_ACTION){ intent ->
    if( intent?.action == SMS_RETRIEVED_ACTION ){

        val extras = intent.extras
        val status = extras?.get( EXTRA_STATUS) as? Status

        if( status?.statusCode == CommonStatusCodes.SUCCESS){
            val message = extras.getString(EXTRA_SMS_MESSAGE, "")

            val otpReceived = Regex("[0-9]{6}").find( message )?.value

            if( otpReceived != null ){

                // here i change the value of "myOtp" !!
                myOtp = otpReceived
            }
        }
    }
}

here is link of the above example:

https://developer.android.com/jetpack/compose/migrate/interoperability-apis/views-in-compose#case-study-broadcastreceivers

You can't modify your compose ui from Broadcast receiver directly. Instead, your Broadcast receiver should change some data in your data layer - datastore, preferences, database or just in memory in some Repository singleton class. Then you should make this data observable and observe them from your compose ui.