Update Composable when input variable change

Android
1

Have a beginners question - probably I don’t understand some fundamentals of Composable.

I have a Composable with a BottomSheetScaffold. Within the Sheet I have a Switch which changes a variable that is input to next composable.

fun DuetScreen(
    duet: Int,
    scaffoldState: BottomSheetScaffoldState,
    modifier: Modifier = Modifier
) {
    var trp1 by remember { mutableStateOf(true) }
    var trp2 by remember { mutableStateOf(true) }

    BottomSheetScaffold(
        scaffoldState = scaffoldState,
        sheetPeekHeight = 0.dp,
        sheetContent = {
            Box(
                Modifier
                    .fillMaxWidth()
                    //.background(Color(0xFFF2F2F8))
                    .height(50.dp),
                contentAlignment = Alignment.Center
            ) {
                Text("Settings")
            }
            Column(
                Modifier
                    .fillMaxWidth()
                    .padding(20.dp),
                horizontalAlignment = Alignment.CenterHorizontally
            ) {
                Text("Trp 1")
                Switch(
                    checked = trp1,
                    onCheckedChange = {
                        trp1 = it
                    }
                )
                Text("Trp 2")
                Switch(
                    checked = trp2,
                    onCheckedChange = {
                        trp2 = it
                    }
                )
            }
        }) { innerPadding ->
        Box(Modifier.padding(innerPadding)) {
            DuetScreenWebView(trp1 = trp1, trp2 = trp2, duet = duet)
        }
    }
}

The idea was that when I change the trp1 value the DuetScreenWebView-composable would also be re-drawn. But that doesn’t happen - what am I doing wrong?