Can't get custom attribute working

Design help Custom code
1

So I can get this code working when I go to add an Element and choose “Embed” under Components.

<a data-sumome-listbuilder-id="93e00625-e856-4649-84d7-67d75cae1598">Click Here</a>

But when trying to get it working on a button through Custom Attributes from Settings on the right panel it doesn’t do anything.

This is the link… Any advice?

2

Can you please share your read-only link?