The first issue you have here is that everything is depending on each other. So you will create a circular definition.
And because you need formulas for all values you will have no way to set a value.
A solution might be to add set values.
You then would have to determine what should happen if more than one value is chosen by modifying the formulas
A better solution might be to create different types. Then you can set the desired values as you wish. The user only has to choose the right type.
Louis
Please mention Revit version, especially when uploading Revit files.
Question:
I know that an if and statement is for two conditions to be true and an if or statement is one condition to be true. But what happens if you just have one condition, but two things were true. Such that if lite count is 1, then top Mullion and Bottom Mullion would show, if not no mullions will show.
Thus conclusion: Multiple Truths per Condition and vice versa Multiple Conditions per Truths. Revit can do the Multiple Conditions per Truths with the "If and statements" and "If no statements". But the Multiple Truths per condition does not work in Revit.... Unless can an embedded if be used?
My work around for the above
Originally, I just had 4 mullions, which included the Bottom, Mid, Center, and Top. (The mullion is a nested family) I aligned these mullions to levels which had included parameters for height. I had these Mullions on Visibility bottom, visibility Mid, visibility center, and visibility top. The dimension parameters include Height from bottom mullion to bottom frame, height from mid mullion to bottom frame, and height from top mullion to top frame.
But being that I cannot say if this condition is true, visibility bottom and visibility top, visibility nothing, I changed my method.
Thus, I consider using the If condition, true = yes, false = no.
If the Lite count had an integer number of 4, then 3 mullions would show
If the lite count had an integer number of 3, then 2 mullions would show
If the lite count had an integer number of 2, then 1 mullion would show
If the Lite count had an integer number of 1, then 0 mullions would show
For 0 mullions, I created a line with an invisible line weight and gave it the visibility of 0 Mullion.
Lastly, I copied mullions and gave them different visibilities, but they maintained alignment to the levels that will dictate the height within the frame. How that works: The center mullion got placed on ctrl visibility center mullion, The top, mid, and bottom mullions were placed on ctrl visibility 3 mullions. I copied the top and Bottom Mullion and placed on ctrl visibility 2 mullions. I copied the bottom mullion and placed it on ctrl visibility 3 mullions. just had 4 mullions, which included the Bottom, Mid, Center, and Top. (The mullion is a nested family) The dimension parameters include Height from bottom mullion to bottom frame, height from mid mullion to bottom frame, and height from top mullion to top frame.
Create a visibility for 2 Mullions
