Use sum() to disable button when a column contains one checked checkbox

1

I have a button that check the checkbox of the corresponding column. I would like to disable the other buttons when one checkbox is checked. I use the formula sum([Test button when checked].Checkboxes)>1 And not(thisRow.Checkboxes)but it does not work.

I think something is missing in the sum part. Here is a MWE:

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2

@Lois_Boutrash

Try something like this:
thisRow.Checkboxes=false AND CountIf(thisTable.Checkboxes,CurrentValue=true )>0

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