Create parameters for nested families

[radu.sebastian.pn]

Hello,

I want to bring in my host family different tipes of small pipe sizes (from separate families) and in that way I will create a list of them. But, for each of it I want to create a pipe connection. If I create that connection in those families, when I import them in the host family I cannot use them. 

My question is how can I create a formula for that parameter, using that list,  so I can use it to define my new diameter according to the family that I whant to use ?

Thank you !

[barthbradley · Accepted solution]

Are you talking about Nested Families that are brought into Host Family via <Type/Types> parameters?

https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2014/EN...

This may help. May not. You decide. Check out 's @Ilic.Andrej 's contribution here:

https://forums.autodesk.com/t5/revit-architecture-forum/formula-to-control-visibility-parameters-bas....

[aleksandr.b]

Hi, watch it, this question we've solved here:
https://forums.autodesk.com/t5/revit-structure-forum/is-it-possible-to-do-family-parameter-concatena...

[radu.sebastian.pn]

Hi and thank you for your answer.

Am I missing something?

[barthbradley]

Yep. Read this: https://revitforum.org/showthread.php/1046-Revit-Formulas-for-quot-everyday-quot-usage

You can't do that. First, is that a <Family/Types> Parameter (e.g. "connection<Generic Model>") or did you title it that way -- with the <Generic Model> a part of the name?   If you did name it that way, use the whole name and put brackets ( [..] ) around it in the formula -- and get rid of the equal sign for "<" or ">".  

for instance: if(and ([connection<Generic Model>]>64.99,[connection<Generic Model>]<65.01, 1<2,2<1)

If you are trying to control which <Family/Type> is used, then read the second Link I posted you to above. Works like a charm for many years.  

[aleksandr.b · Accepted solution]

Do like this:

[radu.sebastian.pn]

Thank you @aleksandr.b. Is exactly what I want but I am receiving this message:

[Ilic.Andrej · Accepted solution]

You re missing more family/type parameters... In the example bellow, "Type 1" is a name of a family type parameter that has a value "Type 1". Then, Family/Type parameter "Dropdown List" is compared with family type parameter "Type 1".  I wish we could use a simple condition like the one you showed, but all we have is this dirty workaround.

[radu.sebastian.pn]

Thanky you very much @Ilic.Andrej !! A lot of nice people here !!

It took a while until I got it but finally... 😀

We can send ships on Mars but "we" cannot create a simple formula in Revit, not even now 😁 

[barthbradley]

I guess people don't read links anymore -- or first posted replies. 

I should have posted is one a few times to get your attention:  

https://forums.autodesk.com/t5/revit-architecture-forum/formula-to-control-visibility-parameters-bas...

https://forums.autodesk.com/t5/revit-architecture-forum/formula-to-control-visibility-parameters-bas...

https://forums.autodesk.com/t5/revit-architecture-forum/formula-to-control-visibility-parameters-bas...

I'll PM  you with more.   Tomorrow good for you?  

😉

[radu.sebastian.pn]

Thanks @barthbradley  🙂