Hi and welcome to the GP-forums!
What is the exact problem and what do you want to do (and how)?
“cannot get it to work” is not so much information that we could know, how to help.
Thecause for such an issue could be anything…
Maybe you should first check if your controller is present in GP… go to the menu “Options” → “MIDI-Ports”
Please make a screenshot of what it shows and upload it here. Then we can go on with investigating what could be wrong.
Oh, and maybe you could read these guidelines first, so you will know what we mean when we ask for “information”… thank you in advance. 