Reverse Robot Drive Direction

[polarvortexrobo]

Hey guys,

This is my second year programming for my team and need some help.

I am using LV and want to create a program that when a button is press, it reverses the drive direction of the robot. For example, the robot is moving forward toward the right. Once the button is pressed, the forward direction is to the left.

How will I go about doing this?

Thanks in advance!
Polar