Raise Parent Object event from Child Object

I have a Panel Component with a TextInput inside.

<Panel ux:Class="FloatLabelTextInput">
   <string ux:Property="Value" />
      <another objects ... />
      <TextInput Value="{Property Value}" Focus.Lost="{onFocusLost}"></TextInput>

When the component is instantiated:

   <FloatLabelTextInput Value="Some text"></FloatLabelTextInput>

How can I delegate Focus.Lost to the root Panel, so when the TextInput lost his focus, the root Panel triggers that event?

Thanks in advance

You will want to use Focus.Delegate. See this thread for details.