Caller id is not displaying

I am going insane, i tried everything but i still can not manage to change the caller id. Is this a provider issue? (when i call my private number, my phone displays no caller id.)
Extensions.conf (where i set my CID)

[from-internal]
exten => _[0-11].,1,NoOp(#### [from-internal] ####)
exten => _[0-11].,n,Set(CALLERID(num)=19999999999)
exten => _[0-11].,n,Dial(PJSIP/${EXTEN}@gotrunk)

Any help is appreciated.

Is the caller ID one that your provider has approved?