Infor Smart Office Mashup - IDM Panel


I am doing a mashup for CLM wherein we need to add a document in IDM. I was able to load all the documents I only needed to show via SearchXQuery key and I am in the process of requesting an attribute to be added.

Now the goal is that when add button is selected and detail panel popups and is ready for entry I want the textbox for a certain attribute to be filled out(it's gonna be a unique id that I will pass). I've been trying to target the key Attribute/@CLM_AccountName or @CLM_AccountName but no luck.

Is there a way for me to populate this? I've tried looking up the exact textbox in WPF but it is not named.

Also, additional request. It would be great if I can disable it.