dynamic widgets and material thumbnails

is communication in the editor different? I am trying to send something to a widget
image
maybe I just can’t find the right property for the variable. but I can’t seem to find anyway to get a proper reference. Trying it directly and with a blueprint interface. but it just won’t fire.

image
I tried both these 2 ways I could find.
the Target widget doesn’t give any errors but also doesn’t seem to work.
the direct WBP reference doesn’t seem to return anything. just acceses nothing.

also would it matter if they are in sepperate levels? I made a special level just for the thumbnail renderer. could that be part of the reason they can’t easily reference eachother?