Limit parameter potential values in family

[BenoitE&A]

Hey,

We have a family (Mech Fitting but does not matter).

We want the user to be able to choose only between 4 choices (text only, not int). 

Is this possible?

I did not find out how using a formula.

Thx !

[L.Maas · Accepted solution]

There are many different ways

Here an example.

Other method could be to make 4 different family types. Then the user only hs to select the proper type.

[BenoitE&A]

Thanks.

It ends with modifying an Int for the user, which is not really great for simple users. But it'll do the job, provided that the 2 parameters are close in the Property pannel (which we'll settle).

I don't want to have multiple families/family types, always messy in code.

Thx anyway, we'll do the first solution.

[BenoitE&A]

Though... This is messy in code too : I need to work on the associated parameter (Choice in your example) instead of the one I'm interested in (Options) if I want to modify the value, which is bad.

No solution at all to use only 1 parameter, with Text values ?

[Mike.FORM]

Until Revit adds a "List" parameter type where you then put the items you want in the list into the formula field and they come up as a drop down in project/properties there is really no great way to do this other than what has been shown.

[L.Maas]

No, Revit has not something like a predefined list for a parameter (unfortunately) inside a family.

Not knowing what and how you are programming. Maybe you can leave the parameter empty, present the user a selection with your code and then push that choice into the parameter?

Another option might be to make use of a key schedule (inside a project).

With a key schedule you can present a user limited choices

But I expect this might cause issues too within your program.