How do I create an array of model lines to adjust to window frame width?

[AL.78]

I have a window frame that has a width parameter.

I want to add model lines in an array to represent mullions. How do I get the array to adjust when the window width adjusts?

[constantin.stroescu]

Place dimensions and make them Equal

[constantin.stroescu]

how it works:

Equal Model Lines space | Revit | Autodesk Knowledge Network

[AL.78]

How do I do this with the array starting on the inside of the frame? I tried the EQ method but it breaks

[constantin.stroescu]

create two Reference Planes and Lock them to your sides , then create the Array between these two RP

[constantin.stroescu]

And either a locked Dimension or a Parameter between the RP that limit the frame outside and  inside of it

Line Array Parametric | Revit | Autodesk Knowledge Network

[thomas]

-

[thomas]

--This is AL.78 writing from another account, my Screencast uploaded to a different account--

Thank you. There seems to be a few more issues that come up -

1. The model line stretches to the top and bottom of the frame, but when it becomes an array, the stretching breaks

2. The EQ dimensions sometimes work and sometimes doesn't

3. Adding a parameter to modify the number of mullions also breaks when the width of the frame changes

[AL.78]

Uploading video of screencast...& attaching .rfa

[barthbradley]

It looks like you are trying to make parametric muntins. If so, may I make a suggestion? Go to Window Manufacturers' websites and download and examine their Revit Window Families. Many use parametric muntins and virtually all of them are done the same way. 

Here's a Revit Window Family from Marvin. Check it out.