[asterisk-users] Set(CALLERID(num-pres)=prohib) / AGI version

[Thorsten Göllner]

Hi,

on this site
http://www.voip-info.org/wiki/view/Asterisk+func+callerid

you can read, that since Atserisk 1.8 the command (in dialplan) to hide 
the caller id is:
Set(CALLERID(num-pres)=prohib)

I tried to implement it into my AGI-Script, but with no success. Can 
please anyone give me a hint, what is wrong with it:
Set CALLERID(num-pres) prohib
or
Set CALLERID(num-pres)=prohib

Both commands lead into:
510 Invalid or unknown command

Besr regards
-Thorsten-