I have an issue where I'm creating a Distribution and Branch Panel Load Schedule (Not Panel Schedule which has different MCB/MLO templates). Issue is the MCB Rating is being shown for MLO Panels, I don't want that. When I try to make the MCB Rating on an MLO panel=0 Revit responds "Value must be greater than 1". So I created a parameter called Is MCB as a Yes/No Type Parameter in both MCB and MLO panels. When that box is checked I want my Calculated Value to report back the harcoded MCB Rating, when it is unchecked I want it to show a dash. I created a Calculated Value in my schedule that reads like this:

if(Is MCB, MCB Rating, "-") Revit responds with "Inconsistent Units"
When I try: if(Is MCB, MCB Rating, -) Revit responds with "Right Parentheses Not Expected"

I also don't want to substitute Revit's hardcoded "MCB Rating" parameter with my own shared "MCB Rating" parameter because I still want to receive any warnings from Revit when I am exceeding 80% of total load for the panel.

Thanks.