Exporting STEP, Specifying a reference csys non interactively
My program involves automated configuration of assemblies. I am exporting the results as STEP files using ProIntf3DFileWrite. The 5th argument is reference Csys, a ProSlection, This argument takes NULL for default csys, but I need a specific csys in my case for future assembly of the step file. My program runs non-interactively, so there is no one selecting the csys. I know the name of the Csys and have code where I am successfully finding and obtaining the handle. What I cannot seem to figure out is how to convert this csys handle to a Pro Selection. Any ideas? Thanks!

