Make PanGesture becoming to slider - ios

Question

I made a PanGuesture as a slider, Here blow is the responds func:
func respondsToPenGesture(sender: UIPanGestureRecognizer) {
if (sender.state == UIGestureRecognizerState.Began) {
if noFilterEffectButton.selected == false {
startPanLocation = sender.locationInView(self.newEffectView)
persentageNumber.text = String(startNumber)
persentageNumber.hidden = false
}
} else if (sender.state == UIGestureRecognizerState.Changed) {
let stopLocation = sender.locationInView(self.newEffectView)
let abscissaChange = stopLocation.x - startPanLocation!.x
if newEffectView.hidden == false {
if abs(abscissaChange) > 0 {
if noFilterEffectButton.selected == false{
if let effectCurrent = self.currentEffect {
effectCurrent.adjustParams(CGFloat(abscissaChange/6))
}
}
}
if noFilterEffectButton.selected == false {
var printChangingNumber = startNumber + Int(abscissaChange)
if printChangingNumber > 100 {
printChangingNumber = 100
} else if printChangingNumber < 0 {
printChangingNumber = 0
}
persentageNumber.text = String(printChangingNumber)
}
}
} else if (sender.state == UIGestureRecognizerState.Ended) {
let stopLocation = sender.locationInView(self.newEffectView)
let abscissaChange = stopLocation.x - startPanLocation!.x
startNumber = startNumber + Int(abscissaChange)
if startNumber > 100 {
startNumber = 100
} else if startNumber < 0 {
startNumber = 0
}
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(0.5*Double(NSEC_PER_SEC))), dispatch_get_main_queue()) {
self.persentageNumber.text = String(self.startNumber)
self.persentageNumber.hidden = true
}
}
}
percentageNumber is a label show the changes on the screen. And the adjustParams() function:
func adjustParams(value: CGFloat) {
newValue = value + newValue
self.adjust = newValue
print("AdjustNumber")
print(adjust)
}
And I override this function for exactly one effect:
override func adjustParams(value: CGFloat) {
super.adjustParams(value)
lastAutValueChange = lastAutValueChange + value/200
lastIntensityChange = lastIntensityChange + value/200
var currentAutValue = lastAutValueChange
var currentIntValue = lastIntensityChange
currentIntValue = currentIntValue < -1.0 ? -1.0 : currentIntValue
//value = value > 1.0 ? 1.0 : value
//autValue = value < -1.0 ? -1.0 : autValue
if (currentIntValue >= 0) {
currentIntValue = 1.0
} else {
currentIntValue += 1
}
if (currentAutValue <= 0) {
currentAutValue = 0
} else {
if currentAutValue > 1 {
currentAutValue = 1
}
}
print(currentIntValue)
print(currentAutValue)
self.autoTuneModule.setIntensity(Float(currentIntValue))
self.audioUnit.finalMix = Double(currentAutValue)
}
The test answer is not matchable for the exactly changes and the percentNumber shows on the screen. How could I change my functions to make them matchable for each others?
(By the way, I want to do something like the slider in Prisma, if there is something like it, please let me know about it).