[Freeswitch-users] Dialplan check if header is present

[Grant Bagdasarian]

Hello,

In the dialplan, how would I check if a header is present?

Should I just check if it has a value like below?

        <condition field="${sip_h_X-MyHeader }" expression="^[a-zA-Z0-9]+$ " break="never">

        </condition>

Regards,

Grant
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