Filtering a lookup to a USERID

Filtering a lookup to a USERID

  
I have an entitiy that reports some data and also has a field to look up previous reports,  this entity is linked to itself.  Everything works perfectly except that I cannot figure out how to filter the lookup table to just that USERID, I have attempted many methods.  Thank You in Advance for any insight on this.
The answer is in building a second Prepartion and setting it up in the Combo-Box, yes I am now a smarter idiot