Customize metadata form with Iptc4xmpExt properties Hi,We have image files representing museum objects, with the inventory number embedded in the Iptc4xmpExt:AOSourceInvNo -property. In the JSON view, it looks like this:Iptc4xmpExt:ArtworkOrObject": {"1": {"newRendition": true,"Iptc4xmpExt:AOSourceInvNo": "B08/24AB","jcr:primaryType": "nt:unstructured"},"xmpArrayType": "rdf:Bag","newRendition": true,"isXMPArray": true,"jcr:primaryType": "nt:unstructured"}Now we"re trying to make this information visible in the AEM forms (following the explanation in https://helpx.adobe.com/aem-forms/6/manage-form-metadata.html). However, I can't figure out which value I need to enter in the map to property filed. (I tried "./jcr:content/metadata/Iptc4xmpExt:AOSourceInvNo" and "./jcr:content/metadata/Iptc4xmpExt:ArtworkOrObjectAOSourceInv" - but no luck with these.) Any ideas? Henk