I think there are two things happening here. The twbx you uploaded appears to not have a target sheet selected. See below:
So you would need to select 'Test1' as the target sheet.
The second issue is the 'Run on single select only' option.
As the line item Name is a header, selecting a line item is effectively selecting multiple marks, which this check box will not let you do for this action. So untick that box and it should work.