asterisk users - May 2006 - Bristuff PickUp and call transfers - can it be done?

Hi All

I'm using the PickUp application from Bristuff to allow me to pick up 
channel groups across Zap and Sip. The only snag is that having picked up 
a call with it, you can't then transfer it on.

Taking a dive into app_dial, it looks like when you specify the T option, 
it does:
 	ast_set_flag(&(config.features_caller), AST_FEATURE_REDIRECT);

Since there's nothing like that in app_pickup, I guess that's why you 
can't do the transfer (nothing has enabled the flag)


Is there any easy way to allow transfers on calls picked up using PickUp?

Failing that, is there a way to call ast_set_flag on the caller features 
from within the Dialplan, or am I going to have to start hacking 
app_pickup.c to add in the ast_flag_set?

Thanks
Nick