Did you open the ShortSleeves.cr2 to look at that and see if it has a path to an .obj?

It looks to me like that what your showing is pointing to another cr2 that contains the real info that you need and use.

That would then be a path such as :Runtime:Geometries:whateverfolders:ShortSleeves.obj

You would then place your new .obj in the Geometries folder you want and point the path to it. There are 2 lines that need to be changed. Just scoll down a bit to find the second line. You should be able to use the Shortsleeves cr2 to create the new one and just rename it something different so you don't over write the original.