diff --git a/Library/Measure.cpp b/Library/Measure.cpp
index fbe9caf6..c6eaebe2 100644
--- a/Library/Measure.cpp
+++ b/Library/Measure.cpp
@@ -86,7 +86,9 @@ CMeasure::CMeasure(CMeterWindow* meterWindow, const WCHAR* name) : CSection(name
 	m_IfAboveCommitted(false),
 	m_IfBelowCommitted(false),
 	m_Disabled(false),
-	m_Initialized(false)
+	m_Initialized(false),
+	m_OldValue(0.0),
+	m_OldStringValue(L"")
 {
 }
 
@@ -145,6 +147,7 @@ void CMeasure::ReadOptions(CConfigParser& parser, const WCHAR* section)
 	m_IfEqualAction = parser.ReadString(section, L"IfEqualAction", L"", false);
 
 	m_OnUpdateAction = parser.ReadString(section, L"OnUpdateAction", L"", false);
+	m_OnChangeAction = parser.ReadString(section, L"OnChangeAction", L"", false);
 
 	m_AverageSize = parser.ReadUInt(section, L"AverageSize", 0);
 
diff --git a/Library/Measure.h b/Library/Measure.h
index ca2cedbe..db9134ce 100644
--- a/Library/Measure.h
+++ b/Library/Measure.h
@@ -69,6 +69,12 @@ public:
 
 	std::wstring GetOnUpdateAction() { return m_OnUpdateAction; }
 
+	std::wstring GetOnChangeAction() { return m_OnChangeAction; }
+	void SetOldValue(double value) { m_OldValue = value; }
+	double GetOldValue() { return m_OldValue; }
+	void SetOldStringValue(std::wstring value) { m_OldStringValue = value; }
+	std::wstring GetOldStringValue() { return m_OldStringValue; }
+
 	CMeterWindow* GetMeterWindow() { return m_MeterWindow; }
 
 	static CMeasure* Create(const WCHAR* measure, CMeterWindow* meterWindow, const WCHAR* name);
@@ -114,6 +120,10 @@ protected:
 
 	std::wstring m_OnUpdateAction;
 
+	std::wstring m_OnChangeAction;
+	double m_OldValue;
+	std::wstring m_OldStringValue;
+
 	CMeterWindow* m_MeterWindow;
 };
 
diff --git a/Library/MeterWindow.cpp b/Library/MeterWindow.cpp
index a2549e27..24484a0f 100644
--- a/Library/MeterWindow.cpp
+++ b/Library/MeterWindow.cpp
@@ -2689,6 +2689,17 @@ void CMeterWindow::Update(bool refresh)
 				{
 					Rainmeter->ExecuteCommand(updateAction.c_str(), this);
 				}
+
+				double newValue = (*i)->GetValue();
+				const WCHAR* newStringValue = (*i)->GetStringValue(AUTOSCALE_OFF, 1, -1, false);
+				std::wstring changeAction = (*i)->GetOnChangeAction();
+
+				if (((*i)->GetOldValue() != newValue || (*i)->GetOldStringValue() != newStringValue) && !changeAction.empty())
+				{
+					(*i)->SetOldValue(newValue);
+					(*i)->SetOldStringValue(newStringValue);
+					Rainmeter->ExecuteCommand(changeAction.c_str(), this);
+				}
 			}
 		}
 	}