topic Re: hidden parameter in Revit API Forum

hidden parameter

Anonymous — Mon, 17 May 2010 14:33:21 GMT

Hi,

is it possible to add a hidden parameter to either a family or a type within a family. If that is not possible can you add a parameter that you cannot edit from within revit?

much appreciated

Re: hidden parameter

Anonymous — Mon, 17 May 2010 16:14:26 GMT

Shared parameters have a "visible" property (defaults to 1 = visible). You could set this to 0 but that requires modifying the shared parameters file manually, which is NOT recommended. (I have not tried changing this value and observing the results myself)

Otherwise, what some people do is put the parameter in the "Other" group in the family (down at the bottom) to help get it more out of sight, and then put a formula on it to "lock" it so it can't be changed in the project editor.

For example:

Name: My Length Parameter
Formula: If(1=1, 17 cm, 0 cm)

Name: My Text Parameter
Formula: "Hello, World"

Name: My YesNo Parameter
Formula: 1=1
or
Formula: 1=0

A caveat to that is that I believe a formula applies to all types, and a formula-locked parameter cannot have its value set when using a type catalog.

HTH.

Re: hidden parameter

Anonymous — Thu, 25 Jan 2018 19:21:03 GMT

I know this is an old post, and I have found a way to edit shared parameters manually but not having any luck with un-hiding a hidden parameter.

I uploaded my door family so you can have a look. I'm trying to add a shared parameter "door number" which revit tells me already exists. But in the family types it appears no such label parameter is there. Is there a bug in the family?