A nested if is an if statement contained within another if or if...else statement. Nested if's allow the creation of a decision tree or flow chart of events with multiple conclusions. Always use /f to format and indent your trigger. This will warn you if you do not have the correct number of ifs to ends. WARNING: multiple unmatched if/ends will crash us. Make sure everything lines up with /f before you test. Example: TSTAT 1490, 41000