Uni-scaling Doubt

Hi

I have a doubt about the uniScalingUnlockable in the jQuery solution.

We need to lock only one axis and leave the other axis free, to resize in horizontal or vertical. but not in a aspect ratio, or don't allow the user to resize one of the axis of a image, desing, etc...

The main use we want to do is to create a design option, like a single line, and allow the user tochange the long of the line, but not to do it wider.

Is it that possible?