DHCP Reservation multiple server

Hello everyone. I am doing dhcp reservation application test with 2 server 2008 r2. Program will use web application for company. Code written c# language. Problem is netsh scripts organized with batch file and it is located on working server. When I try to run that batch file with code, its just affect current server. Other server's reservation are not change. The funny part is that, when I run batch file manually, its working. I also tried copy batch file other server and run with code. It's not work again. How can I do reservations for multiple server with code. thank you in advance for your interest.