🩹 Suggest a fix

Sources/Model/Dice/Faces/AbstractDieFace.cs

@@ -16,7 +16,7 @@ namespace Model.Dice.Faces
         /// </summary>
         protected abstract int Value { get; }
 
-        public abstract int GetPracticalValue();
+        public abstract object GetPracticalValue();
 
         public override string ToString()
         {

Sources/Model/Dice/Faces/NumberDieFace.cs

@@ -14,7 +14,7 @@ namespace Model.Dice.Faces
             Value = value;
         }
 
-        public override int GetPracticalValue()
+        public override object GetPracticalValue()
         {
             return Value;
         }

Sources/Tests/Model_UTs/NumberDieFaceTest.cs

@@ -19,11 +19,9 @@ namespace Tests.Model_UTs
             NumberDieFace face;
             int expected = 11;
 
-
             //Act
             face = new NumberDieFace(expected);
-            Object actuel = face.GetPracticalValue();
-
+            int actuel = (int)face.GetPracticalValue();
 
             //Assert
             Assert.Equal(expected, actuel);