GTM send event when a given page parameter is true

Question

I would like to track registration on my website using GTM and GA. When a user register in my website, he will be redirected to the application and the URL will have the following parameter : ?welcome=true

In this case, I want to send a completeregistration event to GA. I succeed in creating a variable that get the value of the welcome parameter, but then I think something is wrong with my trigger.

Any ideas on how to deal with this?

Thanks

Answer 1

You don't need a variable for this. A trigger like this should do:

Note that reloading the page will result in another event sent. You can prevent it by adding a logic to indicate that the event has already been sent and add a blocking trigger there that blocks the tag from firing if the your logic is present. Something simple like a five-minute cookie should suffice there. A transaction id blocking logic would be near perfect.