IF statments

[sham.summan]

I am trying to make a nested window family which contains both an open and fixed panes which can be controlled with visibility .

I have the following visibility  Yes / No parameter

Hung – Top

Hung – Bottom

Hung – Left

Hung – Right

Frame – Opening

Frame - Fixed

I am trying to control the visibility of the Frame - Opening and Frame – Fixed from the values of the hung properties. 

If any of the hung values are set on I would like Frame – Opening to be on.

If non of the hung values are selected I want Frame – Opening to be switch off and Frame - Fixed to be on.

Sure this is very simple of someone out there.

Any helps is appreciated.     

S

[L.Maas · Accepted solution]

The easiest way is to use "and" "or" "not" statements in a formula

in the formula for "Frame - Opening"

=or(Hung – Top, Hung – Bottom, Hung – Left, Hung – Right)

This means if any of the value are true then "yes"  

in the formula for "Frame - Fixed"

=Not(Frame - Opening)

[sham.summan]

perfect,

Thanks

[Alfredo_Medina]

Don't use that hyphen or dash symbol in the name of a parameter. Revit might understand that as a "minus" symbol when you use any of those parameters in a formula.

[sham.summan]

How can this ne inverted,  If something is off,  then put something on.?

[David_W_Koch]

Use the NOT operator, as shown above.

If you have one parameter that can be either Yes or No (such as a Yes/No paramater that offers a check box in the properties), then setting up a second Yes/No parameter and assigning a formula of

not(ParameterName)

will give you the inverse, or negation, of that first parameter (where ParameterName is the name you gave the first parameter).