Invalid Formula Error

[hakan.supurkeci]

Hello,

I am having a problem with Family. I cannot update any formulas or add new formulas. When I try to perform these operations, it gives an "Invalid Formula" error.
What could be the reason for this?

Best regards,
Hakan

[Tom_Kunsman]

What version of revit? And please post the family. 

What are you trying to do with the formula in the family?

[hakan.supurkeci]

Hello,

In all versions, when I create a new parameter, I cannot enter anything into it. No matter what I enter, it says invalid formula. I'm giving an example, I first noticed this in this section, in the formula here
if(Upwards, "KX-UV", if(Downward, "KX-DV", if(Rightwards, "KX-RH", if(Leftward, "KX-LH", "НЕТ"))))

This formula works in other families as well. I started getting this error only when I came here and tried to make "KX-II-UV" NOT "KX-UV". Even if I delete the entire formula and type "test", it still gives an error.

[Alfredo_Medina]

"Invalid formula" usually occurs when you have types in a family and one of the values is invalid for one of the types. The problem may not have anything to do with the formula that you're writing nor the current type. It might be another parameter in another type. Check all other types and see if all their default values make sense.

[ToanDN]

Share the family here.

[barthbradley]

Use Brackets around values.  

[value]