@jtcpap An example of how to modify the TealiumCustomData.php file with key: value pairs can be seen by viewing TealiumInit.php. TealiumInit.php has the basic setup, and you add your custom setup in TealiumCustomData.php. Additionally, to be able to use the TealiumCustomData.php file you will need to navigate to the admin section of your magent instance, on the left hand side under Configuration you will see Tealium -> Tag Management, there you will need to change 'Enable Custom UDO' from no to yes. While we don't have a 'partially filled out' TealiumCustomData.php file, as this file is setup to be modified by the end user, viewing the TealiumInit.php should lead you in the right direction. Cheers!
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