How to create a model line array in two directions

[markthorleyadt768272]

I have created a simple line array in a detail family template however this could also be created as a model line in a family. I have assigned the first and last point of the array to the length and assigned a parameter that calculates the number of arrays dependant upon the length. However I also want the line to be constrained in the vertical axis, so when the height is altered in the family the line stretches to meet the new dimension. I have tried locking the end points of the line to the relevant reference planes however this doesn't seem to work.

Any help would be great...

I have attached the current .rfa file to help people understand what I mean.

[CADastrophe]

The last time I did something like that, I created the resizable line as its own family and loaded it in. It's much easier to control the array that way, as you don't have to wrestle with the constraints or including a Reference Line in the Array Group.