setting sender on Wap Push

Hi!

I got PPG running for sending Wap Push and everything works fine.

It seems Kannel sends "1234" as the default sender in Wap Pushes, but I want to set it to the short 
code where the user has sent his MO to.

I've found no parameter where to set that on PPG or anyhting...

The only possibility I found is to set global-sender in smsbox, but with that all Wap Pushes will 
always go out with the same short code as sender...

Is there any patch available for this, or can it be implemented on CVS?

I think it would be something good, since if not Wap Pushes go out with a sender that's not where 
the user sent his MO to, and when the user gets the Wap Push is a bit weird to have it from 1234 or 
another short code set up with global-sender...

Thanks in advance,

Juan