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diff --git a/Samples/common/src/MyNumericControl.cs b/Samples/common/src/MyNumericControl.cs
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+//Tutorial
+using Crow;
+
+namespace MyNumericControl {
+	public class MyNumericControl : TemplatedControl {
+		protected double actualValue, minValue, maxValue;
+		public double Minimum {
+			get => minValue;
+			set {
+				if (minValue == value)
+					return;
+				minValue = value;
+				if (Value < minValue)
+					Value = minValue;
+				NotifyValueChangedAuto (minValue);
+			}
+		}
+		public double Maximum {
+			get => maxValue;
+			set {
+				if (maxValue == value)
+					return;
+				maxValue = value;
+				NotifyValueChangedAuto (maxValue);
+
+				if (Value > maxValue)
+					Value = maxValue;
+
+			}
+		}
+		public virtual double Value	{
+			get => actualValue;
+			set	{
+				if (actualValue == value)
+					return;
+				if (value < minValue)
+					actualValue = minValue;
+				else if (value > maxValue)
+					actualValue = maxValue;
+				else
+					actualValue = value;
+				NotifyValueChangedAuto (actualValue);
+			}
+		}
+	}
+}
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