[Freeswitch-users] Can't test for empty variable

[Per Modin]

On 2020-12-11 15:43 (Fri), David Villasmil wrote:
>  <condition field="${dtmf_get}" expression="^$">
> 
> But it's always false...
> 
> How can I test for an empty (null?) variable?

Hi David,

try checking for any characters (`".+"`), then you create an
`<anti-action>` clause that'll be executed on empty (null?) variable.

https://freeswitch.org/confluence/display/FREESWITCH/XML+Dialplan#XMLDialplan-Anti-Actions

Best,
Per.
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