In this example you can see that the copy of events is not successful.
First I select the event number 2, this automatically selects the number 3.
Then I deselect event number 3 to select ONLY number 2.
Then I copy the event by pressing Control + C
Then I paste it and the error happens when the message appears that the variable named "Variable1" does not exist in the zone in which I am going to paste the event.
But the copied event does not include any reference to that variable, so the message that appears is not right.