Catching the Client ID in a custom variable with GTM
I've been trying for a while now to retrieve the Client ID into a custom variable so I can use it in reports.
I used Simo's methods:
The advantage for me is that I wouldn't neccessarily need a webdeveloper to customize the tracking code in the original html source. So I'm trying to make this work.
Thanks to the second method, I get no firing errors. But the Client ID consistently returns 'false'. So in my reports, I only have one value in my Client ID variable: false.
Does anyone know what might be causing this and how I can fix it?