diff --git a/HighRollerClassic/DataStructures/SettingValueType.cs b/HighRollerClassic/DataStructures/SettingValueType.cs
new file mode 100644
index 0000000..7be4b03
--- /dev/null
+++ b/HighRollerClassic/DataStructures/SettingValueType.cs
@@ -0,0 +1,6 @@
+namespace HighRollerClassic.DataStructures;
+
+public enum SettingValueType
+{
+    
+}
diff --git a/HighRollerClassic/DataStructures/TrackedValue.cs b/HighRollerClassic/DataStructures/TrackedValue.cs
new file mode 100644
index 0000000..be743ae
--- /dev/null
+++ b/HighRollerClassic/DataStructures/TrackedValue.cs
@@ -0,0 +1,22 @@
+using System;
+
+namespace HighRollerClassic.DataStructures;
+
+public class TrackedValue<TParent, TValue>
+{
+    public TValue Value { get; set; }
+    public bool IsValid { get; set; }
+    public bool HasChanged { get; set; }
+
+    private const uint MinRoll = 1;
+    private const uint MaxRoll = 999;
+    private const uint MaxGil = 999_999_999;
+
+    private Func<uint, bool> multiplierRollValid = v => v is >= MinRoll and <= MaxRoll;
+    private Func<uint, bool> maxBetValid = v => v <= MaxGil;
+
+    private static bool StepValid(uint step, uint bet)
+    {
+        return step <= bet;
+    }
+}
diff --git a/HighRollerClassic/Player.cs b/HighRollerClassic/Player.cs
index 8d2a42b..bed535d 100644
--- a/HighRollerClassic/Player.cs
+++ b/HighRollerClassic/Player.cs
@@ -9,4 +9,6 @@ public class Player(MenuTargetDefault target)
     public int Bank { get; private set; } = 0;
 
     public ulong ContentId { get; private set; } = target.TargetContentId;
+    
+    // TODO implement roll history FULL
 }