After posting my original query I realized that I really did not want to reset the Selection formula but do a full text search. I have created the following code in the search for the the dataView in question

var user = context.getUser().getFullName();
var qString  = "(FIELD ACCurrentApprovers CONTAINS \"" + @UserName() + "\")"
return qString

I have used both the var user and the @UserName() but with either case I geta 500 Internal Server Error.

From what I have read and looked  seen this should work. It compiles without error.

I'm at a bit of a loss on this.