"IF" formula with "False reslut" get value itseft

[Ar_vxv]

Hi!
Same like title. I try write If formula with false result by Input value ( not by  prevalue specify).
Is this possible!? Or another approach
For Examle: IF (H.1<110, H.2, <input value>)
With H.1, H.2 : the lengths of the two vertical sides
thanks for any help

[barthbradley]

I'm not clear what the "input value" is. Is it a value that can be computed?  

[Ar_vxv]

Hi!
if i don't use formula. I will have to enter smt in the value cell= <input value>
>>> IF H.1 not < 110, <False reslut> by my <input value>.

[barthbradley]

Still unclear. What is supposed to happen if the formula returns "input value"?  Nothing?  Or do you literally want the Parameter feild to read "Input Value".   If it's a Text Parameter it could.  

[Ar_vxv]

when H.1 <= 110 . I use the value of H.2
When H.1 > 110. I want to enter numeric value in value cell
Looks like this is not possible in revit. So is there any other way in this case

[ToanDN]

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@Ar_vxv wrote:

when H.1 <= 110 . I use the value of H.2
When H.1 > 110. I want to enter numeric value in value cell
Looks like this is not possible in revit. So is there any other way in this case

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You cannot have a parameter that for input value and also reacts to a formula.

You need to add Input Value parameter:

d.2_input

d.2 = if (H.1 <110 mm, d.1, d.2_input)

[barthbradley]

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@Ar_vxv wrote:

when H.1 <= 110 . I use the value of H.2
When H.1 > 110. I want to enter numeric value in value cell
Looks like this is not possible in revit. So is there any other way in this case

---

Look it; if H.1 is greater than 110, you are going to have to arrive at SOME value. Why can't that value already be computed and ready to use?   

[Ar_vxv]

can you explain d.2_ input more specifically:
I cannot enter d.2_input for Revit to accept.
which one do you mean:
-d.2_input
-d.2_100
-100

[ToanDN]

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@Ar_vxv wrote:
can you explain d.2_ input more specifically:
I cannot enter d.2_input for Revit to accept.
which one do you mean:
-d.2_input
-d.2_100
-100

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The formula: d.2 = if (H.1 <110 mm, d.1, d.2_input)

in plain English: if H.1 < 110 mm then use value of d.1 for d.2, if H.1 ≥ 110 mm then use value of d.2_input for d.2; for example if you enter the value for d.2_input = 200 mm then d.2 = 200 mm.

If you still don't get it, just share you family here.

[Ar_vxv]

Thanks for help

[barthbradley]

[Ar_vxv]

-Why can't that value already be computed and ready to use?:
Currently, it depends on Sweep's position in the project. I will Duplicate the profile section and change the H.1 value to match. Now I want to add a function when H.1 <=110 then H.1 takes the value of H.2.
-Your image: 😄

[ToanDN · Accepted solution]

Revit 2022 family is attached.  I don't have Revit 2020.

[Ar_vxv]

From that Formula i can understand. Many thanks!

[barthbradley]

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@Ar_vxv wrote:

From that Formula i can understand. Many thanks!

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HUH??? That helped?  That's exactly what I've been trying to tell you all along!  

[mhiserZFHXS]

No its not. You had the if false result as a set value, not another parameter.

[barthbradley]

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@mhiserZFHXS wrote:

No its not. You had the if false result as a set value, not another parameter.

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No, that not what I was saying. Read Message #7 again.  I asked: "Why can't that value already be computed and ready to use?"  Where do ready-to-use, computed values come from? Other Parameters - that's where.    

Whatever.  Obviously, we had a failure to communicate.   

[Ar_vxv]

@barthbradley 
It's true! I should have seen such a basic thing. Pardon my ignorance.

[barthbradley]

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@Ar_vxv wrote:

@barthbradley 
It's true! I should have seen such a basic thing. Pardon my ignorance.

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There's nothing to pardon. We just had a failure to communicate. I'm glad you reached an "Aha" moment. 😉