I have a profile frame that I control with configurations in LEFT & RIGHT because the drill holes are different.
Now I need different profile lengths for different projects. How can I change the length of the profile independently of the component? In other words, how can I specify a value in the assembly that adjusts the length for the part, but keeps the part itself the same, since I need different lengths for the same part in other assemblies? 
Unfortunately, I couldn't find anything.