Here is a HelpPaneContentTemplate:
<r:Ribbon.HelpPaneContentTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock
Name="lbl_Help"
Text="1234"
VerticalAlignment="Center" />
<r:RibbonButton
Name="rbhelp"
SmallImageSource="Icons/help.ico"
Command="Help"
/>
</StackPanel>
</DataTemplate>
</r:Ribbon.HelpPaneContentTemplate>
The Question I have -> How am I able to access the TextBlock (Named lbl_Help here) to update the Text from Codebehind? I tried to use "FindName" but I don't know how to reference to the HelpPaneContentTemplate to call Findname correctly.