Sum cells inside repeating group from second item in list field

I have a list field, called action_values_values, which contains 2 values per cell.

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I’ve created a repeating Group which takes always the second element of the list.

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Now, my goal is to calculate the sum of all the cells within the repeating Group and store it in a custom state. Could you guide me on how to achieve this?

you are not using a repeating group for the second element of the list you are using a group

so you can simply reference the actual repeating group that has the two items and say rg each items second item sum