and this group detail open at the bottom and some times open at top, if its open bottom its index number is 12 if it appear at bottom its index vale is 11.
which activities i can use to achieve this which selectors i need to edit.
You shouldn’t use idx for exactly this reason. On the left in the Visual Tree what is there if you expand a list item? You need a selector that includes the text of the item to click. Does this input allow you to type? In other words if you click Installed Assets then type Group Details does it select that one?