asterisk users - Feb 2006 - Increment Variable

What's the best way to increment a numeric variable in the dial plan?
I tried this...

exten => s,1,Set(mainLoop=${MATH(${mainLoop}+1)})

but that converts it to a floating point number (WHY???), so I end up with
1.0000, which later on means I have to perform string manipulation to get rid of
the .0000.

Thanks
Doug

Doug,

The TFOT book recommends using expressions instead of dialplan
functions:

exten => s,1,Set(mainLoop=$[${mainLoop} + 1])

-MC

-----Original Message-----
From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Douglas
Garstang
Sent: Wednesday, February 15, 2006 2:10 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [Asterisk-Users] Increment Variable

What's the best way to increment a numeric variable in the dial plan?
I tried this...

exten => s,1,Set(mainLoop=${MATH(${mainLoop}+1)})

but that converts it to a floating point number (WHY???), so I end up
with 1.0000, which later on means I have to perform string manipulation
to get rid of the .0000. 

Thanks
Doug
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> What's the best way to increment a numeric variable in the dial plan?
> I tried this...
>
> exten => s,1,Set(mainLoop=${MATH(${mainLoop}+1)})
exten => s,1,Set(mainLoop=$[${mainLoop} + 1])

hth