Hey Everyone,
I have been trying to create a Relative Elevation Level Head that has a prefix of + or - depending on whether the elevation is greater than, equal to, or less than 0'. Typically we have 100' as "zero" so I created a formula label in the Level Head family that takes the elevation and substracts 100' which worked fine. I want to now create a visibility parameter that either shows a + or - prefix label depending on the elevation but running into issues when trying to use a yes/no formula. A simple solution would be to duplicate the family and have one be + and the other - but would prefer to have just one family. I've tried several formulas but not sure if they aren't working because the true "Elevation" parameter is a shared and therefore a project parameter can't link to it. Is this possible?
Attached are some images below to see what I've been trying. One problem might be that there is already a project parameter within the family called "Elevation" that doesn't have any value associated that I can find, so do I need to create another "Relative Elevation" parameter that somehow ties to the shared "Elevation" parameter? Having the main yes/no formula under the "Minus" formula made the most sense to me so I don't have to deal with a >=0 which I know Revit doesn't like. My Boolean expression should work but I could be wrong too so any help is greatly appreciated.
