Custom Queue Code

I’m trying to get my phones to auto answer on queue calls only. I can do this by sending a SipADDHeader(Call-Info: answer-after=0) and setting my phones to Auto Answer = no and Auto Answer on Call info = yes.

The trouble I’m having is to get this code to only execute during queue calls. I’m using FreePBX 2.9.0.7 and Asterisk 1.6.X so I’m trying to add this code to extensions_custom.conf

If I use [from-internal-custom] it will execute on every inbound call to that extension assigned to the queue but it will also execute on any other call not coming from a queue. Is there an equivalent custom queue context that I can use? I tried [from-queue-custom] but that didn’t seem to work.

Thanks for the help