Wildcard within IF expression in nested collection

[BrookeSt1]

I'm having trouble getting a user wildcard to work in a valueexpression within a nested list statement. My end goal is to show a column with all those co-assigned to a user's tasks, but not show their own name.  Using the collection of Assignments within a task, I can make this code work and it correctly lists only the other people that are co-assigned with the user with that specific ID:

displayname=Co-Assignments
listdelimiter=<p>
listmethod=nested(assignments).lists
type=iterate
valueexpression=IF({assignedTo}.{ID}="5d13826400d6f67f13d0f5847989da56", "", CONCAT({assignedTo}.{name}))
valueformat=HTML

But when I switch out the hard coded ID number for the variable $$USER.ID the column is blank.

displayname=Co-Assignments
listdelimiter=<p>
listmethod=nested(assignments).lists
type=iterate
valueexpression=IF({assignedTo}.{ID}=$$USER.ID, "", CONCAT({assignedTo}.{name}))
valueformat=HTML

I've also tried "$$USER.ID" and {$$USER.ID} to no avail. Does anyone know if the syntax of this wildcard is wrong when used in an IF statement or why the variable wildcard would not work?

[JustinRenteria2]

Looking at the API Explorer I'd try using {assignedToID} not {assignedTo}.{ID}.

[JustinRenteria2 · Accepted solution]

I kept testing this and couldnt get the wildcard to work in the calculation. I decided to look at the documentation and found this snippet:  "Wildcard filter variables are not supported when referencing nested collections in a calculated column". Unless Im misinterpreting the verbiage it looks like you cannot use the wildcard in the collection. 

Link:  Wildcard filter variables | Adobe Workfront

[BrookeSt1]

Hmmm, well that's certainly disappointing. I appreciate you looking at it and finding this answer. It was driving me crazy.  Thanks.