title: Cannot find the setter for attribute 'app:fastScrollEnabled' with parameter type boolean on androidx.recyclerview.widget.RecyclerView
body: <p>I've tried setting an ObservableField or a String value, still doesn't work. If I just set a static true or false value instead of the viewModel reference, it works.</p>
  
  <p><strong>Layout file:</strong></p>
  
  <pre><code>     &lt;layout xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:app="http://schemas.android.com/apk/res-auto"&gt;
  
      &lt;data&gt;
  
          &lt;variable
                  name="viewModel"
                  type="app.viewmodel.ViewModel"/&gt;
      &lt;/data&gt;
   &lt;androidx.recyclerview.widget.RecyclerView
                          android:id="@+id/recyclerview"
                          android:layout_width="match_parent"
                          android:layout_height="match_parent"
                          android:scrollbars="vertical"
                          app:fastScrollEnabled="@{viewModel.isUserAdmin}"
                          app:fastScrollHorizontalThumbDrawable="@drawable/thumb_drawable"
                          app:fastScrollHorizontalTrackDrawable="@drawable/line_drawable"
                          app:fastScrollVerticalThumbDrawable="@drawable/thumb_drawable"
                          app:fastScrollVerticalTrackDrawable="@drawable/line_drawable"
                          app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"/&gt;
  &lt;/layout&gt;
  </code></pre>
  
  <p><strong>ViewModel:</strong></p>
  
  <pre><code>class AppointmentsViewModel()
  {
       val isUserAdmin: Boolean = sharedPreferencesRepo.isUserAdmin
  }
  </code></pre>