Improper use of boolean in Revit 2018.2

[Jason_S]

I have a parameter Door Rating that if it is filled in with 90 MIN it a tag will read A.

I have this:  IF(Door Rating = "90 MIN", "A", "B")  I am getting the Improper use of a Boolean when I try to hit the OK.

This is a Text parameter.  What am I missing.  Revit 2018.2

Thank you.

[ToanDN]

Is Fire Rating a text parameter?  Text parameters don't not work in a formula.  Create another Fire Rating as Integer parameter and use it.

[Corsten.Au · Accepted solution]

Yes.. as @ToanDN mentioned.. 

here are some samples which works..

Simple IF: =IF (Length < 3000mm, 200mm, 300mm)

IF with a text parameter: =IF (Length > 35', “String1”, “String2”)

IF with logical AND: =IF ( AND (x = 1 , y = 2), 8 , 3 )

IF with logical OR: =IF ( OR ( A = 1 , B = 3 ) , 8 , 3 )

Embedded IF statements: =IF ( Length < 35' , 2' 6" , IF ( Length < 45' , 3' , IF ( Length < 55' , 5' , 8' ) ) )

IF with Yes/No condition: =Length > 40 (Note that both the condition and the results are implied.)

Cheers!

[Viveka_CD]

Hi @Jason_S

It's been a while and I'm checking back to see if you were able to make progress on your issue?

Did the suggestions by @Corsten.Au and @ToanDN help resolve your issue?

Please let us know if further assistance is required and if you have any additional questions.

Regards,

[Radish_G]

Hi @Corsten.Au,

I got the same message while I key-in the following formula (R 2019.2). Need your guidance.

[Corsten.Au]

Hello 

Make sure all parameters are " Length " parameter.

Example - Unit in Meters

also instance parameters can be calculated from Type but not other way round.

ex

Length (m) - Length(m) = length (m)

Length (m) + Length(m) = length (m)

Length (m) x Length ( m) = Area ( m² )

Square root of  Area ( m² ) = Area ( m² )  ( Example Square root of 49 m² = Area 7m² ( it won't give you length (m)

Area ( m² ) / 2 ( number/integer ) = Area ( m² )

Idea is paying attention to " Units" of " Parameters "

[Radish_G]

Hi @Corsten.Au,

Thanks for your reply.

Can help me locate the exact error in my formula?

End Offset (mm)-(Overall Size (mm)/2)

[bin]

One of the parameters might not be length...

[Radish_G]

Hi @bin,

Thanks for your reply.

Is there any way to identify the type of these system parameters?

[Anonymous]

Edit the parameter - it will show what category it is.

[Radish_G]

Hi @Anonymous,

Thanks for your reply.

Are we able to do it for the System Family Parameters?

Pipe Family...,

[Anonymous]

Hi Radish G - yes you can check these also.

If you do not see the category then check that the discipline is set to the correct category.

[Radish_G]

Hi @Anonymous ,

Thanks for your reply.

What I mean is, how to find the type of the existing parameters.

In this case, how to find the type of the "Overall Size" parameter of Pipe Insulation.

[Anonymous]

If you edit the parameter you can see the type - it will be greyed out though, as it cannot be changed.  If you need a different one you will need to create a new one.

[Radish_G]

Hi @Anonymous,

Thanks for your reply.

This is the place where I am stuck with.

May I have a screenshot of it?