2019-11-01, 19:58
Use a conditional onclick. It's enough to set "none" or "-" for the label. Setting these as fallback is used as identifier to proceed with the next items without stopping the creation.
Code:
<onclick condition="!Library.HasContent(movies)>SetProperty(Dialog.1.Label,none)</onclick>
<onclick condition="Library.HasContent(movies)>SetProperty(Dialog.1.Label,.....)</onclick>
<onclick condition="Library.HasContent(movies)>SetProperty(Dialog.1.BuiltIn,.....)</onclick>