Process Composer | CAD model switch

Hi,

I am trying to build a Process where I need to change CAD models and convert to STL format, For Ex: I have 4 CAD models built in 3DX and i need to loop through each model display in 3Dview for review and convert it to STL format. when user will select the CAD model based on key words and convert it to a format. I am unable to switch CAD models in process composer as the Model parameters and other adapters take only one model. Please let me know how to loop and fetch different models in a single process flow. Any guide or method will be greatly appreciated.

 

Ashwin