Index: sources/gui/qml/components/Slider.qml
===================================================================
diff -u -r5e03d3f26ea0c88562e430c4b8192dd745fa1011 -ra070e7cd1dc7dcb4ba7fc5906c195357fe95d2f9
--- sources/gui/qml/components/Slider.qml	(.../Slider.qml)	(revision 5e03d3f26ea0c88562e430c4b8192dd745fa1011)
+++ sources/gui/qml/components/Slider.qml	(.../Slider.qml)	(revision a070e7cd1dc7dcb4ba7fc5906c195357fe95d2f9)
@@ -1,13 +1,13 @@
 /*!
  *
- * Copyright (c) 2020-2022 Diality Inc. - All Rights Reserved.
+ * Copyright (c) 2020-2023 Diality Inc. - All Rights Reserved.
  * \copyright
  * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
  * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
  *
  * \file    Slider.qml
  * \author  (last)      Behrouz NematiPour
- * \date    (last)      22-Jul-2022
+ * \date    (last)      10-Feb-2023
  * \author  (original)  Behrouz NematiPour
  * \date    (original)  18-Mar-2020
  *
@@ -51,6 +51,43 @@
     signal progressRectDragged()
     signal activeChanged()
 
+    function incrementValue (vInStepSegments) {
+        // in case the slider is not yet activated, activate
+        if (!isActive) {
+            setActive(true)
+        }
+        updateValue(vInStepSegments, true)
+    }
+
+    function decrementValue (vInStepSegments) {
+        // in case the slider is not yet activated, activate
+        if (!isActive) {
+            setActive(true)
+        }
+        updateValue(vInStepSegments, false)
+    }
+
+    function updateValue(vInStepSegments, vIsIncrement) {
+        let amountChanged = 1
+        if (vInStepSegments) {
+            amountChanged = step
+        }
+
+        let newValue = Number.NaN
+        if(vIsIncrement) {
+            newValue = _root.value + amountChanged
+        } else {
+            newValue = _root.value - amountChanged
+        }
+
+        // Capping values based on min/max threshold
+        if ( newValue < minimum ) newValue = minimum
+        if ( newValue > maximum ) newValue = maximum
+
+        // update new value
+        update(newValue.toFixed(decimal))
+    }
+
     function setActive(active) {
         if (active) {
             color = Colors.createTreatmentActive
@@ -113,24 +150,28 @@
 
     function setValue(x) {
         let mValue = 0
-        if ( x <     0 ) { mValue = minimum;                             update(mValue); return; }
-        if ( x > width ) { mValue = maximum;                             update(mValue); return; }
+        let mMinimum = Number(_root.minimum.toFixed(decimal))
+        let mMaximum = Number(_root.maximum.toFixed(decimal))
+        if ( x <     0 ) { mValue = mMinimum;                           update(mValue); return; }
+        if ( x > width ) { mValue = mMaximum;                           update(mValue); return; }
 
         mValue = getValueOfX(x)
 
-        if ( step === 1 ) { mValue = parseInt(mValue);                   update(mValue); return; }
+        if ( step === 1 ) { mValue = parseInt(mValue);                  update(mValue); return; }
 
         let start = 0
-        if ( ! stepSnap ) start = minimum
+        if ( ! stepSnap ) start = mMinimum
         mValue = Math.round((mValue - start) / step) * step + start
 
         let decimals = Math.round(-Math.log10(step))
-        if (decimals > 0) mValue = mValue.toFixed(decimals)
+        if (decimals > 0) {
+            mValue = mValue.toFixed(decimals)
+        }
 
-        if ( mValue < minimum ) { mValue = minimum;                       update(mValue); return; }
-        if ( mValue > maximum ) { mValue = maximum;                       update(mValue); return; }
+        if ( mValue < mMinimum ) { mValue = mMinimum;                   update(mValue); return; }
+        if ( mValue > mMaximum ) { mValue = mMaximum;                   update(mValue); return; }
 
-                                                                          update(mValue); return;
+                                                                        update(mValue); return;
     }
 
     function setHandlerPosition() {