Pass Data to the Collection Widget Header Mashup Parameters

Not sure how your mashup is constructed, are you saying that your Collection widget has a mashup displayed in it, that has a header and a body? Then you first would pass it into the collection and then in that mashup use mashup parameters to pass them further.

Or do you have a specific 1st cell of collection = header setup or the likes, you can specifically pass parameters into the collection that you want to use for that. You can even assign the mashup to display in your payload.

Hello,

Is this what you mean?:

You have a collection widget where you have added your collection header mashup?

Then there should be this added property field for the collection widget: "HeaderSectionParam".

Although this seems to only give you the possibility to pass one parameter, or if the mashups parameter is an infotable or something, that might work as well. Please give it a try.