Yeah, that Calculated Property screenshot looks all wrong. You haven’t given it a name, and the expression you put in probably always evaluates to logical true, if anything.
Also, _Facing will not hold a value in degrees, but rather the number for the current facing (since you have 60 facings, it will be in the range 1 to 60).
The right and left keys are used to change the facing of the unit 6 degrees, however when I use the above and move back and forth facing wise the numbers are off, bug or stupid vassal module maker?