[asterisk-users] parsing issue

[Danny Nicholas]

3 possibilities - 1 use an AGI; 2 use a system command 3 (hopefully the
simplest) just use a Set command.  Which one you actually end up using may
depend on your Asterisk flavor.

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of CDR
Sent: Wednesday, May 02, 2012 12:48 PM
To: asterisk-users at lists.digium.com
Subject: [asterisk-users] parsing issue

I get an error when I execute this code
exten => rejected,n,Hangup($[-1*${Z}])

May  2 13:42:09] WARNING[23128]: ast_expr2.fl:468 ast_yyerror:
ast_yyerror():  syntax error: syntax error, unexpected $end, expecting '-'
or '!' or '(' or '<token>'; Input:
-1*

The variable "Z" has a  negative number, which is the code that I need to
use in the hangup.
Any idea how can I do this? There is no ABS() function in Asterisk. I
already filed a request for it but it turns up that it will cost me money.
How can I remove the sign from a number?
Philip

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