[dev] dtl if in 2.2

I'm trying to make a link in AgentTicketZoom.dtl to a page with customer info. The target page will depend on what queue you're in. Following the examples in the developer docs, I did a simple dtl "if" statement, something like this -- I can print the QueueID just fine. No matter what I do, I cannot set "Adminpage", even with a simple "set" -- But nada. This is otrs version 2.2.4-01. I hoped to do this as cleanly as possible. What am I doing wrong? Thanks.