Philipp Kempgen wrote:
> Richard Lyman schrieb:
>
>> Philipp Kempgen wrote:
>>
>
>
>>> But I guess it wouldn't hurt to add a DEFINED() function to
>>> Asterisk.
>>>
>>> if (DEFINED(myvariable)) {
>>> // ...
>>> }
>>>
>>>
>> Isn't that what ISNULL is for?
>>
>
> No. ISNULL() works on values not on variables.
>
> But Dave Fullerton found EXISTS():
> http://lists.digium.com/pipermail/asterisk-users/2008-December/224059.html
>
>
> Philipp Kempgen
>
>
if (${ISNULL(${CAMPAIGN})}) {
Set(CAMPAIGN=INBOUND);
};
This is how i use it.
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