Add a parameter rather in numerical value

Author: peternewell

Source/Orts.Simulation/Simulation/RollingStocks/SubSystems/Brakes/MSTS/AirSinglePipe.cs

@@ -523,7 +523,7 @@ public override void Update(float elapsedClockSeconds)
                 {
                     // WSP dump valve stops
                     Car.WheelBrakeSlideProtectionActive = false;
-                    Car.WheelBrakeSlideProtectionTimerS = 7.0f; // Reset WSP timer if 
+                    Car.WheelBrakeSlideProtectionTimerS = Car.wheelBrakeSlideTimerResetValueS; // Reset WSP timer if 
                 }
 
             }

Source/Orts.Simulation/Simulation/RollingStocks/TrainCar.cs

@@ -259,7 +259,8 @@ public float ConvectionFactor
         public bool WheelBrakeSlideProtectionFitted = false;
         public bool WheelBrakeSlideProtectionActive = false;
         public bool WheelBrakeSlideProtectionLimitDisabled = false;
-        public float WheelBrakeSlideProtectionTimerS = 7;
+        public float wheelBrakeSlideTimerResetValueS = 7.0f; // Set wsp time to 7 secs
+        public float WheelBrakeSlideProtectionTimerS = 7.0f;
         public bool WheelBrakeSlideProtectionDumpValveLockout = false;
 
         public bool BrakeSkid = false;
@@ -974,7 +975,7 @@ public virtual void UpdateBrakeSlideCalculation()
                     // Reset WSP dump valve lockout
                     if (WheelBrakeSlideProtectionFitted && WheelBrakeSlideProtectionDumpValveLockout && (ThrottlePercent > 0.01 || AbsSpeedMpS <= 0.002))
                     {
-                        WheelBrakeSlideProtectionTimerS = 7;
+                        WheelBrakeSlideProtectionTimerS = wheelBrakeSlideTimerResetValueS;
                         WheelBrakeSlideProtectionDumpValveLockout = false;
 
                     }