Set Speed of Jaguar

[team 3311]

Hello guys,

we are trying to run this motor. All the ports are hooked up right.
We initiated the Jaguar and did everything but we can't make the motor running. We have a Joystick and if this one button is pressed the motor should start working, but it doesn't.
What can we do to fix it?

if(rightstick.GetRawButton(8));
{
armcrane.Set(1); 
}

The armcrane is the name of our Jaguar.

Thanks for helping!

PS: We are not the best of programmers, so we need a good explaination.