monitor Vertica database in PRTG

Hello
I used Vertica 8.0.3 Enterprise edition I want to monitor my database in PRTG but i cant find a right string connection for PRTG
i installed the perquisite of PRTG including .net 4 and Vertica driver in my windows 7 and every thing looks fine but string connection is the main problem
Please help me ASAP
Best Regards
Mostafa