var example = Observable("");
    <Panel ux:Class="Example" Name="self">
        <string ux:Property="Value" ux:Value="" />
        <TextEdit Value="{Property self.Value}" />
    </Panel>
<Example Value="{example}" />
In local preview I had no problem, but in Android I got this error:
ERROR: Object reference was null Uno.NullReferenceException occured.
 This code works if you compile for Android, so