How to assign a surface to a feature creation?

Hi,

I want to move a surface of model by using a FLEXMOVE feature.
According to the documentation you have to use a ProCollection object to do this.
This can be done by using ProSurfaceCollect.

However this means a manual selection by the user.

What I want is to move a surface that is specified by my software not the user.

How can I populate a ProCollection object with my surfaces without requiring a user to select them?

I couldn't find any function in the documentation that allows me to do this.

Best regards,

     John Bijnens