How to import a Autodesk Robot file to Grasshopper using JumpingFrog

I have constructed a truss construction in Autodesk Robot, and would like to import the file to Grasshopper. I have instaled the plug in JumpingFrog Robot, does anyone know how to do this?
I have just started using Rhino and Grasshopper, so this is all new to me.

Thank you in advance.