Add MacOs Finder compatible Quicklook Extension for custom file types to Mac Catalyst App

I have an iOS app which has an embedded Quicklook Extension that works perfectly - in the Files app on iPad/iPhone I can QuickLook view and edit custom file types without problems. However, when I run the app on a Silicon Mac using Mac Catalyst (or (Made For iPad)) while the Finder does recognise the custom file types (allowing "Open in…" or double-clicking to open) it does not show the Quick Look extension. How do I add Finder QuickLook extension functionality to a Mac Catalyst app?

Thanks

Add MacOs Finder compatible Quicklook Extension for custom file types to Mac Catalyst App
 
 
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