diff --git a/apps/graph/graph/preimage_parameter_controller.cpp b/apps/graph/graph/preimage_parameter_controller.cpp
index 1c1e519da..cc96183b2 100644
--- a/apps/graph/graph/preimage_parameter_controller.cpp
+++ b/apps/graph/graph/preimage_parameter_controller.cpp
@@ -21,10 +21,6 @@ PreimageParameterController::PreimageParameterController(
 {
 }
 
-const char * PreimageParameterController::title() {
-  return I18n::translate(I18n::Message::Preimage);
-}
-
 void PreimageParameterController::viewWillAppear() {
   setParameterName(I18n::Message::Y);
   m_preimageGraphController->setImage(m_cursor->y());
@@ -32,19 +28,17 @@ void PreimageParameterController::viewWillAppear() {
 }
 
 void PreimageParameterController::buttonAction() {
-  m_preimageGraphController->setRecord(m_record);
-  StackViewController * stack = static_cast<StackViewController *>(parentResponder());
-  stack->pop();
-  stack->pop();
-  stack->pop();
-  stack->push(m_preimageGraphController);
+  if (confirmParameterAtIndex(0, m_tempParameter)) {
+    m_preimageGraphController->setRecord(m_record);
+    StackViewController * stack = static_cast<StackViewController *>(parentResponder());
+    stack->pop();
+    stack->pop();
+    stack->pop();
+    stack->push(m_preimageGraphController);
+  }
 }
 
-double PreimageParameterController::parameterAtIndex(int index) {
-  assert(index == 0);
-  return m_preimageGraphController->image();
-}
-bool PreimageParameterController::setParameterAtIndex(int parameterIndex, double f) {
+bool PreimageParameterController::confirmParameterAtIndex(int parameterIndex, double f) {
   assert(parameterIndex == 0);
   m_preimageGraphController->setImage(f);
   return true;
diff --git a/apps/graph/graph/preimage_parameter_controller.h b/apps/graph/graph/preimage_parameter_controller.h
index dbe683004..1b8d1a963 100644
--- a/apps/graph/graph/preimage_parameter_controller.h
+++ b/apps/graph/graph/preimage_parameter_controller.h
@@ -15,13 +15,16 @@ public:
     Shared::CurveViewCursor * cursor,
     PreimageGraphController * preimageGraphController
   );
-  const char * title() override;
+  const char * title() override { return I18n::translate(I18n::Message::Preimage); }
   void setRecord(Ion::Storage::Record record) { m_record = record; }
   void viewWillAppear() override;
 private:
   void buttonAction() override;
-  double parameterAtIndex(int index) override;
-  bool setParameterAtIndex(int parameterIndex, double f) override;
+  double extractParameterAtIndex(int index) override {
+    assert(index == 0);
+    return m_preimageGraphController->image();
+  }
+  bool confirmParameterAtIndex(int parameterIndex, double f) override;
   Ion::Storage::Record m_record;
   PreimageGraphController * m_preimageGraphController;
 };
diff --git a/apps/regression/go_to_parameter_controller.cpp b/apps/regression/go_to_parameter_controller.cpp
index d313f8e63..461f98bfa 100644
--- a/apps/regression/go_to_parameter_controller.cpp
+++ b/apps/regression/go_to_parameter_controller.cpp
@@ -30,7 +30,7 @@ const char * GoToParameterController::title() {
   return I18n::translate(I18n::Message::YPrediction);
 }
 
-double GoToParameterController::parameterAtIndex(int index) {
+double GoToParameterController::extractParameterAtIndex(int index) {
   assert(index == 0);
   if (m_xPrediction) {
     return m_cursor->x();
@@ -38,7 +38,7 @@ double GoToParameterController::parameterAtIndex(int index) {
   return m_cursor->y();
 }
 
-bool GoToParameterController::setParameterAtIndex(int parameterIndex, double f) {
+bool GoToParameterController::confirmParameterAtIndex(int parameterIndex, double f) {
   assert(parameterIndex == 0);
   int series = m_graphController->selectedSeriesIndex();
   Poincare::Context * globContext = AppsContainer::sharedAppsContainer()->globalContext();
diff --git a/apps/regression/go_to_parameter_controller.h b/apps/regression/go_to_parameter_controller.h
index c5d27f6c7..3fa6d6aab 100644
--- a/apps/regression/go_to_parameter_controller.h
+++ b/apps/regression/go_to_parameter_controller.h
@@ -15,8 +15,8 @@ public:
   void setXPrediction(bool xPrediction);
   const char * title() override;
 private:
-  double parameterAtIndex(int index) override;
-  bool setParameterAtIndex(int parameterIndex, double f) override;
+  double extractParameterAtIndex(int index) override;
+  bool confirmParameterAtIndex(int parameterIndex, double f) override;
   Store * m_store;
   bool m_xPrediction;
   GraphController * m_graphController;
diff --git a/apps/shared/function_go_to_parameter_controller.cpp b/apps/shared/function_go_to_parameter_controller.cpp
index 3382815b1..c5b21cb43 100644
--- a/apps/shared/function_go_to_parameter_controller.cpp
+++ b/apps/shared/function_go_to_parameter_controller.cpp
@@ -11,16 +11,7 @@ FunctionGoToParameterController::FunctionGoToParameterController(Responder * par
 {
 }
 
-const char * FunctionGoToParameterController::title() {
-  return I18n::translate(I18n::Message::Goto);
-}
-
-double FunctionGoToParameterController::parameterAtIndex(int index) {
-  assert(index == 0);
-  return m_cursor->t();
-}
-
-bool FunctionGoToParameterController::setParameterAtIndex(int parameterIndex, double f) {
+bool FunctionGoToParameterController::confirmParameterAtIndex(int parameterIndex, double f) {
   assert(parameterIndex == 0);
   FunctionApp * myApp = FunctionApp::app();
   ExpiringPointer<Function> function = myApp->functionStore()->modelForRecord(m_record);
diff --git a/apps/shared/function_go_to_parameter_controller.h b/apps/shared/function_go_to_parameter_controller.h
index 5af912a31..a5680105f 100644
--- a/apps/shared/function_go_to_parameter_controller.h
+++ b/apps/shared/function_go_to_parameter_controller.h
@@ -9,13 +9,16 @@ namespace Shared {
 class FunctionGoToParameterController : public GoToParameterController {
 public:
   FunctionGoToParameterController(Responder * parentResponder, InputEventHandlerDelegate * inputEventHandlerDelegate, InteractiveCurveViewRange * graphRange, CurveViewCursor * cursor);
-  const char * title() override;
+  const char * title() override { return I18n::translate(I18n::Message::Goto); }
   void setRecord(Ion::Storage::Record record);
 protected:
-  bool setParameterAtIndex(int parameterIndex, double f) override;
+  bool confirmParameterAtIndex(int parameterIndex, double f) override;
   Ion::Storage::Record m_record;
 private:
-  double parameterAtIndex(int index) override;
+  double extractParameterAtIndex(int index) override {
+    assert(index == 0);
+    return m_cursor->t();
+  }
 };
 
 }
diff --git a/apps/shared/go_to_parameter_controller.cpp b/apps/shared/go_to_parameter_controller.cpp
index d72ab64d9..5151af985 100644
--- a/apps/shared/go_to_parameter_controller.cpp
+++ b/apps/shared/go_to_parameter_controller.cpp
@@ -11,19 +11,11 @@ GoToParameterController::GoToParameterController(Responder * parentResponder, In
 {
 }
 
-int GoToParameterController::numberOfRows() const {
-  return 2;
-}
-
 HighlightCell * GoToParameterController::reusableParameterCell(int index, int type) {
   assert(index == 0);
   return &m_parameterCell;
 }
 
-int GoToParameterController::reusableParameterCellCount(int type) {
-  return 1;
-}
-
 bool GoToParameterController::handleEvent(Ion::Events::Event event) {
   if (event == Ion::Events::Left) {
     stackController()->pop();
@@ -32,10 +24,25 @@ bool GoToParameterController::handleEvent(Ion::Events::Event event) {
   return false;
 }
 
+void GoToParameterController::viewWillAppear() {
+  // Initialize m_tempParameter to the extracted value.
+  setParameterAtIndex(0, extractParameterAtIndex(0));
+  FloatParameterController::viewWillAppear();
+}
+
+bool GoToParameterController::setParameterAtIndex(int parameterIndex, double f) {
+  assert(parameterIndex == 0);
+  m_tempParameter = f;
+  return true;
+}
+
 void GoToParameterController::buttonAction() {
-  StackViewController * stack = (StackViewController *)parentResponder();
-  stack->pop();
-  stack->pop();
+  // Update parameter value to m_tempParameter, and proceed if value is valid
+  if (confirmParameterAtIndex(0, m_tempParameter)) {
+    StackViewController * stack = (StackViewController *)parentResponder();
+    stack->pop();
+    stack->pop();
+  }
 }
 
 }
diff --git a/apps/shared/go_to_parameter_controller.h b/apps/shared/go_to_parameter_controller.h
index 31516b923..24b39c5ea 100644
--- a/apps/shared/go_to_parameter_controller.h
+++ b/apps/shared/go_to_parameter_controller.h
@@ -11,16 +11,28 @@ namespace Shared {
 class GoToParameterController : public FloatParameterController<double> {
 public:
   GoToParameterController(Responder * parentResponder, InputEventHandlerDelegate * inputEventHandlerDelegate, InteractiveCurveViewRange * graphRange, CurveViewCursor * cursor);
-  int numberOfRows() const override;
+  int numberOfRows() const override { return 2; }
   bool handleEvent(Ion::Events::Event event) override;
 protected:
   void setParameterName(I18n::Message message) { m_parameterCell.setMessage(message); }
+  void viewWillAppear() override;
+  // extractParameterAtIndex extracts the current value of the parameter
+  virtual double extractParameterAtIndex(int index) = 0;
+  // confirmParameterAtIndex updates the current value of the parameter
+  virtual bool confirmParameterAtIndex(int parameterIndex, double f) = 0;
+  // parameterAtIndex and setParameterAtIndex manipulate m_tempParameter only
+  double parameterAtIndex(int index) override {
+    assert(index == 0);
+    return m_tempParameter;
+  }
+  bool setParameterAtIndex(int parameterIndex, double f) override;
   CurveViewCursor * m_cursor;
   InteractiveCurveViewRange * m_graphRange;
+  double m_tempParameter;
 private:
   void buttonAction() override;
   HighlightCell * reusableParameterCell(int index, int type) override;
-  int reusableParameterCellCount(int type) override;
+  int reusableParameterCellCount(int type) override { return 1; }
   MessageTableCellWithEditableText m_parameterCell;
 };