Peer Types in Model Administrator

Hello, all

I have a question about the peer-type relationships in Bentley Utilities Designer. I know it is possible because I’ve seen it in the example electric data model but I have problems with setting a new relationship between two primary features.

Actually I have tried to set one ParentChild peer type in the Peer Types spreadsheet in the MA as you can see in the screenshot below.

 

Then in the FeatureRelationships spreadsheet I assigned the new peer-type to the features Pole and File where the Pole is the parent and the File is the child as you can see in the screenshot below.

The idea is to be able to attach multiple files to the Pole feature (drawings; other documents, etc.) using the File feature. But because I need to attach files to other primary features as well I want to use a single primary feature File which I can use with all of them instead of creating subfeatures for every single one of them.

But when I open the software in the Edit dialogue of the parent feature (the Pole) in tab Files I am unable to add a new File feature as you can see in the screenshot below. So my question is how to add the ‘Add’ command in the context menu in the tab Files as it’s implemented for example for the Conduit Route in the BUDELEC data module.