Hello guys, I have a german gateway among other gateways going to the same dialling plan and it does not send the interational caller ID prefix so I want to add 0049 and strip the first 0 in the caller ID sent. But Is it possible to add a condition inside the gateway setting as follows (action applicaiton set ... etc)? <gateway name="trunk_1000"> <param name="realm" value="bluesip.net"/> <param name="username" value="xxxxxxxx"/> <param name="password" value="xxxxxxxx"/> <param name="register" value="true"/> <action application="set" data="effective_caller_id_number=0${caller_id_number}"/> <param name="extension" value="kgvm-1002"/> </gateway I don't want to add it to the dialing plan in order not to affect the caller id from other gateways. Thank you Sherif