This is more of a consultancy rather than a project and I would like a GTM expert to explain me very clearly the root of my problem. I tried to search for a solution but without any results.
-> Whenever I create a User-Defined Variable in GTM, it is "undefined" in the Debug mode for some reason. You can see the details in the screenshots.
I want to be able to extract these variables from the dataLayer through the User-Defined Variables so I could send their actual values (numbers, codes, product id's, pagetypes etc) to different tags like Google Analytics or Google Remarketing Tag.