I don't know everyone knows this or not, but the easiest way to confirm that your Jass spell doesn't have any errors is to right click on the trigger (on the ladder to the left of the screen) and click "enable trigger"(the checkmark will be removed). The trigger's icon will then have a red x through it. Then just right click "enable trigger" again(the checkmark will return if no errors are present), and it will show you any errors you may have (if any). Hope this helps anyone who may have been checking by testing or saving the map.
