In my case the same and I am not able to find help in the bat file gets exactly what you say
And then gives me this error:
C:Users********DesktopServerTechnick PackVoltz>java -Xmx3G -Xmx2G -jar Voltz.jar nogui
Error occurred during initialization of VM
Could not reserve enough space for object heap
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has ocurred. Program will exit.
C:Users********DesktopServerTechnick PackVoltz>pause
Press any key to continue . . .
Please help