IF/THEN Formula and "Yes/No" Parameter

[clippincott-CL]

I have created two "Yes/No" parameters in a family and associated each of them with the visibility of a different symbol in the family. If one of these parameters is set to "Yes", I want the other set to automatically be set to "No", and vice/versa.

I was trying to achieve this by making a formula that basically says, IF X=Yes THEN Y=No but I don't know how to reference the values of "Yes" or "No" in my formula, Revit tells me that "Yes" and "No" are not valid family parameters. I also tried "True" and "False" but got the same result.

Any ideas as to how I can do this? Any suggestions will be appreciated.

[ToanDN]

Is it the same as V2 = not (V1)?

[Anonymous]

Yes

---

@ToanDN wrote:
Is it the same as V2 = not (V1)?

---

[Anonymous]

Thank you so much Mr. Schmid.

[iram.zamora]

That's a great method,

But, Can you constrain the integer to a certain range of numbers, 

For example, you are just using from 1 to 5, but you can type 60, and nothing it's gonna happen, can you put a limit to it?

Thanks!

[ToanDN]

You need two parameters, one for input and the other for cap the range.

Input_param (integer)
Output_param (integer), formula: if (Input param > 5, 5, Input_param)

Assign the Output_param to your target. When you enter 60 to the Input, you will get 5 as the result.

[indiana_j0nes]

Hi,

Maybe someone can help me out here, this maybe something much simpler.

So, I have three parameters H, G and O.

These control visibility in a Room-Tag and at a time only one is active in each of three Room-Tag Family-Type.

So when H is Visible, G cannot be and the reverse, this I can achieve by a simple not(H) or not(G) formula.

But there are instances where neither H or G can be visible, how do I achieve that?

Cheers for your help. K 

[fabiosato · Accepted solution]

Hello,

To simplify this solution, I prefer to create an integer parameter and use one value for each situation, like:

1 - O

2 - H

3 - G

And you can insert this rule in the tooltip of the parameter.

[Anonymous]

Hello,
nice solution. thanks!
My question: Where can i find this syntax documented? (in the classic "Help Doc" of Revit i can't find this "not(x)" syntax) is there more kind of that?

thanks in advance.

Greetings

[ToanDN · Accepted solution]

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

[Anonymous]

Thank you!

[Anonymous]

Was this solved?

[iainsavage]

The answer is on the page linked below.

https://knowledge.autodesk.com/support/revit-products/troubleshooting/caas/sfdcarticles/sfdcarticles...

[CourtneyHarwell]

Trying to set up parameters for a cabinet that if a certain pull type is displayed, the others automatically hide. What am I doing wrong? The current set up below is not working and it is still allowing for multiple options to be selected/displayed at once. (The shelf parameter is working as that is simple and only going between two options).

[ajinath]

Hello,

I have same problem.

[stanford.r]

Sometimes it is useful to use a if/then for a "Yes/No" Parameter. Simply use a true/false equation. For yes, 1=1 and for no 1=0.

Example:  if(var A, 1=1, 1=0)

It is more useful with if(and(a,b),true, false)
For example if two things need to be true to display or one thing needs to be true and the other false, just add "not".

if(and(a,not(b)),1=1, 1=0)

[dsalvagni]

If I have a bunch of signs in a family and I want one to be on and the rest to automatically turn off how do I do it, what formula do I use.  for example I have 10 different signs in one family and I want to be able to select the instance parameter that I want to use and have all the other ones turn off.

[fabiosato]

Hello,

In this case, I prefer to create an integer value and use each value to make on each family visible.

Family 1 - Integer =1

Family 2 - Integer =2

[ThobaniM_SUTH]

You can reference the values of yes and no in the if statement as 2>1 for yes and 1>2 for no. The structure is "if(<CONDITION>, RESULT-IF-TRUE, RESULTS IF FALSE>"

Found that in this YouTube video - https://www.youtube.com/watch?v=02jjT6yYYcs. Hope this helps anyone with the same issue.