Vary shooter wheel speed in increments

I am looking to use buttons on my joystick to vary my shooter wheel speed up or down. Basically if I hit button 12 the value going to “set output” increases by .01 and if I hit button 11 it dose the opposite (with a start point at .78). How can I do this.

*Code is LabVIEW

Our team uses a slider on our dashboard to vary the shooter speed. Additionally, we linked a button to increase shooter speed very slightly each press. I don’t have the exact code on me, but I can get it on Monday when I have access to the programming computers.

*Would something like this work?

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That should work, thanks a million.