Slider problem

If I have a slider 0 - 100. Having two mps playing the turn this into a music master slider, that can turn down and up and mix two songs?

I have two counters. counter2 work but not counter1?

Counter 1 should start at 100 go down to 50 at the same time?

* Always
Counter 2 : Set Counter to Current Value( "Widget: Sliderbar - Slider" ) + Current Value( "Widget: Sliderbar - Slider" ) - 100 / 2

* Always
Counter : Set Counter to value( "Counter 2" ) + 100 * 2

Right now I'm forced to use two sliders, Would be cool with just one slider

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I was thinking the same, also think it's only way... THe problem is that the soundmanager2 do not read -100 and it have to be 50 - 50 in sound volume the middle! Hope it make sence...

Yes Thank You

also when in vertical slider is goes from 0 to 100 in Y down

Str$(( Y( "slider" ) - Y( "volumecontrol" ) ) / ( ( Y Bottom( "volumecontrol" ) - Y Top( "volumecontrol" ) ) / 100 ))

How can I reverse this code so 100 will be in top?