@JeffSchwenk, I picked it out of a post that @ClarkWalliser commented on. He indicated Alnoor had helped him with it at one point. I searched for the post but could not find it; however, I found my the clip of Clark's notes from the post. I tried it and it worked for me although, I didn't need the third step (DFDM VI0XRF). VI picked it up on it's own.
oClark Walliser
These are the only notes I have:
DFDM MAS90\providex.ddf
Lookup by name to find the VI entity to modify - get the key ID.
DFDM MAS90\providex.dde
Search by Key. Find the field record you want to modify
Edit field 20 (15,1) a zero is importable. a 1 is read only.
DFDM VI0XRF.SOA (it's what exposes UDFs to V/I Data tab)
(I don't know what came after this - I assume to make sure the field you want exists in this file)