Hi!
You can’t change the state of a group in an RG that way.
U can use a plugin like List Shifter: Reverse, Rotate, Swap and ITERATE (Loop) Over Bubble Lists | Now at v1.4: Adds Numeric Option, GET INDEX Action which has a built in “selected cell” feature and then use that to trigger a workflow to enable editing.
A native way is to actually have a state (number type) in your page that will be used to store a cell’s index.
So when the user clicks Edit, your workflow will store the ‘cell’s index’ in that state.
Now all u have to do is set your conditionals to enable editing when “cell index is state”.