[billbo911]

If you are using Labview, or any environment for that matter, it is quite simple. Check the state of a given input, in this case a button on the joystick. When the input is false, give one value to the servo. When that input is true, give a different value to the servo.

See the pictures below for an example.

In c it might be something like:

if digin1 == 1
{
  servo1 = 118;
}
else
{
  servo1 = 75;
}