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kotlinlang

Hi
i am investigating compose backdrop component and i am trying to implement multi selection and have the backdrop appBar show the user has switched to multi selection
i have a boolean `val isActionModeState by viewModel.isActionMode.collectAsStateWithLifecycle()`  which is being set correctly however my backdrop app bar does not
change.

`BackdropScaffold(`
    `scaffoldState = backdropScaffoldState,`
    `gesturesEnabled = false,`
    `appBar = if (isActionModeState) actionMode else myAppBar,`
    `frontLayerBackgroundColor = MaterialTheme.colorScheme.surface,`
    `backLayerBackgroundColor = MaterialTheme.colorScheme.inverseOnSurface,`
    `backLayerContentColor = MaterialTheme.colorScheme.onSecondary,`
    `backLayerContent = *{*`

where am i going wrong?

is it not possible to communicate from the backdrop frontContent to the appBar?