diff --git a/Gems/EMotionFX/Code/EMotionFX/Tools/EMotionStudio/EMStudioSDK/Source/MainWindow.cpp b/Gems/EMotionFX/Code/EMotionFX/Tools/EMotionStudio/EMStudioSDK/Source/MainWindow.cpp
index c1c48b3480..7303c8d559 100644
--- a/Gems/EMotionFX/Code/EMotionFX/Tools/EMotionStudio/EMStudioSDK/Source/MainWindow.cpp
+++ b/Gems/EMotionFX/Code/EMotionFX/Tools/EMotionStudio/EMStudioSDK/Source/MainWindow.cpp
@@ -163,9 +163,9 @@ namespace EMStudio
         {}
         ~UndoMenuCallback() = default;
 
-        void OnRemoveCommand([[maybe_unused]] uint32 historyIndex) override          { m_mainWindow->UpdateUndoRedo(); }
-        void OnSetCurrentCommand([[maybe_unused]] uint32 index) override             { m_mainWindow->UpdateUndoRedo(); }
-        void OnAddCommandToHistory([[maybe_unused]] uint32 historyIndex, [[maybe_unused]] MCore::CommandGroup* group, [[maybe_unused]] MCore::Command* command, [[maybe_unused]] const MCore::CommandLine& commandLine) override { m_mainWindow->UpdateUndoRedo(); }
+        void OnRemoveCommand([[maybe_unused]] size_t historyIndex) override          { m_mainWindow->UpdateUndoRedo(); }
+        void OnSetCurrentCommand([[maybe_unused]] size_t index) override             { m_mainWindow->UpdateUndoRedo(); }
+        void OnAddCommandToHistory([[maybe_unused]] size_t historyIndex, [[maybe_unused]] MCore::CommandGroup* group, [[maybe_unused]] MCore::Command* command, [[maybe_unused]] const MCore::CommandLine& commandLine) override { m_mainWindow->UpdateUndoRedo(); }
 
         void OnPreExecuteCommand([[maybe_unused]] MCore::CommandGroup* group, [[maybe_unused]] MCore::Command* command, [[maybe_unused]] const MCore::CommandLine& commandLine) override {}
         void OnPostExecuteCommand([[maybe_unused]] MCore::CommandGroup* group, [[maybe_unused]] MCore::Command* command, [[maybe_unused]] const MCore::CommandLine& commandLine, [[maybe_unused]] bool wasSuccess, [[maybe_unused]] const AZStd::string& outResult) override {}
diff --git a/Gems/EMotionFX/Code/MCore/Source/Command.cpp b/Gems/EMotionFX/Code/MCore/Source/Command.cpp
index 39e9fde965..8845e7c278 100644
--- a/Gems/EMotionFX/Code/MCore/Source/Command.cpp
+++ b/Gems/EMotionFX/Code/MCore/Source/Command.cpp
@@ -8,6 +8,7 @@
 
 // include the required headers
 #include "Command.h"
+#include <AzCore/std/numeric.h>
 
 #include <AzCore/Serialization/SerializeContext.h>
 
@@ -81,9 +82,9 @@ namespace MCore
     }
 
 
-    uint32 Command::GetNumCallbacks() const
+    size_t Command::GetNumCallbacks() const
     {
-        return static_cast<uint32>(mCallbacks.size());
+        return mCallbacks.size();
     }
 
 
@@ -123,37 +124,18 @@ namespace MCore
 
 
     // calculate the number of registered pre-execute callbacks
-    uint32 Command::CalcNumPreCommandCallbacks() const
+    size_t Command::CalcNumPreCommandCallbacks() const
     {
-        uint32 result = 0;
-
-        const size_t numCallbacks = mCallbacks.size();
-        for (size_t i = 0; i < numCallbacks; ++i)
+        return AZStd::accumulate(begin(mCallbacks), end(mCallbacks), size_t{0}, [](size_t total, const Callback* callback)
         {
-            if (mCallbacks[i]->GetExecutePreCommand())
-            {
-                result++;
-            }
-        }
-
-        return result;
+            return callback->GetExecutePreCommand() ? total + 1 : total;
+        });
     }
 
 
     // calculate the number of registered post-execute callbacks
-    uint32 Command::CalcNumPostCommandCallbacks() const
+    size_t Command::CalcNumPostCommandCallbacks() const
     {
-        uint32 result = 0;
-
-        const size_t numCallbacks = mCallbacks.size();
-        for (size_t i = 0; i < numCallbacks; ++i)
-        {
-            if (mCallbacks[i]->GetExecutePreCommand() == false)
-            {
-                result++;
-            }
-        }
-
-        return result;
+        return mCallbacks.size() - CalcNumPreCommandCallbacks();
     }
 } // namespace MCore
diff --git a/Gems/EMotionFX/Code/MCore/Source/Command.h b/Gems/EMotionFX/Code/MCore/Source/Command.h
index 7309c5dc91..d6bfb3a0d7 100644
--- a/Gems/EMotionFX/Code/MCore/Source/Command.h
+++ b/Gems/EMotionFX/Code/MCore/Source/Command.h
@@ -279,26 +279,26 @@ namespace MCore
          * Get the number of registered/added command callbacks.
          * @result The number of command callbacks that have been added.
          */
-        uint32 GetNumCallbacks() const;
+        size_t GetNumCallbacks() const;
 
         /**
          * Calculate the number of registered pre-execute callbacks.
          * @result The number of registered pre-execute callbacks.
          */
-        uint32 CalcNumPreCommandCallbacks() const;
+        size_t CalcNumPreCommandCallbacks() const;
 
         /**
          * Calculate the number of registered post-execute callbacks.
          * @result The number of registered post-execute callbacks.
          */
-        uint32 CalcNumPostCommandCallbacks() const;
+        size_t CalcNumPostCommandCallbacks() const;
 
         /**
          * Get a given command callback.
          * @param index The callback number, which must be in range of [0..GetNumCallbacks()-1].
          * @result A pointer to the command callback object.
          */
-        MCORE_INLINE Command::Callback* GetCallback(uint32 index)               { return mCallbacks[index]; }
+        MCORE_INLINE Command::Callback* GetCallback(size_t index)               { return mCallbacks[index]; }
 
         /**
          * Add (register) a command callback.