Problem with pin connection in assembly

Hello,

I would be really grateful if you can help me with this issue:

I assembled the parts of an exoskeleton for upper limb from my master thesis. It has 3 degrees of freedom modelled with a mechanical pin connection in creo parametric. regenerating the assembly and exporting it with the Simscape export link to Simulink works fin!! The only problem is the the initial value for the angle is set randomly. I tried to define the intial value of the angle in the placement-->rotation axes menu in creo. But when I export the assembly the initial angle value (not the position itself) is changed

would be great if someone knows a solution

thank!

Marco