Dynamic Repeat with button inside a card, how to select the parent group's ID?

I’m learning Wappler and am excited for what the future holds here. I’m experienced with Bubble and am having a difficult time understanding how to do something seemingly simple here with Wappler and repeats.

Node.js on Wappler Beta 4 11, Intel Mac

I have a repeat with some very basic cards, each with a button for selecting the parent group’s item:

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I want to set a cookie value based on the id of the parent group’s item:

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In the data bindings I assume I just need to select the id of the parent group so I see this:

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And select this:

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But, it never works and always uses the value “repeat1[0].id”

I’m wondering how to dynamically select an attribute contained in the parent group’s data item. I appreciate the help!