Hello,

I'm trying to write a macro that build an URL. It verify if the querystring "callid" contains a value then append "&callid=value" to my URL else don't add anything

This is what I'm using right now but it doesn't work :

{%?callid?|(notequals)|(truevalue)&callid={?callid?}|(falsevalue)%}

I'm unable to find the right syntax for testing an empty string in a macro,

Could you help me.

Thanks