Just change the value variable number 1 (You have a "Variable operation" command in the events). You can change it in intervals from -100 to 100, where negatvie numbers indicate that he's evil and positive that the he's good. If it goes out of range, it will be scaled automatically. You can change the $ge_variable_ID = 1 to i.e. $ge_variable_ID = 2 if you want to use number variable number 2 for the indicator instead.