asterisk users - Jun 2006 - syntax error

Does anyone know why this row:

 exten => s,2,GotoIf($[${CALLERIDNAME:0:${LEN(${RGPREFIX})}}
!${RGPREFIX}]?4:3)

generate this error:

ast_expr2.fl: ast_yyerror(): syntax error: syntax error, unexpected TOK_NE,
expecting TOK_MINUS or TOK_COMPL or TOK_LP or TOKEN; Input:
 != 
 ^

?

I was unable to debug it.
--
DV

Yeah, I know. I was just grumpy. I shouldn't have whinged.? I think if
you'll look at the time I sent it, it was close to 2AM after spending all
afternoon, night, and morning, fighting with dialplan 8)
 
So, definately, my whinge was unneccesary and uncalled for, and I publically
apologise for it.
 
--Rob 
(In a much better mood now 8) 
 
----- Original Message ----- 
From: asterisk-users-bounces@lists.digium.com on behalf of Brian Capouch  
Sent: Thu, 6/22/2006 8:38am 
To: Asterisk Users Mailing List - Non-Commercial Discussion  
Subject: Re: [Asterisk-Users] syntax error 
 
Rob Thomas wrote: 
> And once again I am reminded why I shouldn't bother helping people
here.
>  
> Not even a 'thanks'. 
>  
>  
 
Dang, dude. 
 
If everyone who got helped on this list responded to the list with a  
thank-you, list traffic would go up by at least 10% :-) 
 
And it's a PIA to manually circumvent the list software's hijacking of  
the reply address; one has to cut-and-paste.??That makes private  
thank-yous kind of a pain, too. 
 
Overall your helpfulness is certainly appreciated.??It sucks some of the  
value out of it when you whine about being explicitly thanked for it, IMO. 
 
MO, and nothing more. 
 
Thx. 
 
B. 
 
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