I am creating a drop list on a form that I have, I will like the drop list to reference all users' full names. When i create the drop list and select the "Source Field" (assigned) i am able to expand that assigned field and select assigned.fullname as my source field, but the fullname option has a lock image on it (but still able to use as a source field), which I think explains why i am unable to see anything populated in the drop list when I do a quick test.
My goal is to only have all the users' names populated in the drop list. I created this drop list as a reference. Anyone have an explanation why the "lock" would be there / how do I resolve it.
I have attached a picture of this, hopefully its helpful