Issue with TagManager when publishing the suggested code to handle Mobile visits differently from Desktop via Groups

Hello! Thank you in advance for the help.
I have an issue with TagManager when publishing the suggested code to handle Mobile visits differently from Desktop via Groups.

After doing exactly as recommended here:

When I publish the code in GTM I get an error regarding the (let) argument down here:

type or paste code here

Hi!

Can you provide the error you’ve been receiving?
I’ll do my best to assist you here :slight_smile:

Kind regards

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