diff --git a/fmusim-gui/MainWindow.cpp b/fmusim-gui/MainWindow.cpp
index da8e7816..a25c394f 100644
--- a/fmusim-gui/MainWindow.cpp
+++ b/fmusim-gui/MainWindow.cpp
@@ -75,6 +75,15 @@ MainWindow::MainWindow(QWidget *parent)
 
     setColorScheme(QGuiApplication::styleHints()->colorScheme());
 
+    // context menu
+    contextMenu = new QMenu(this);
+
+    QAction* expandAllAction = contextMenu->addAction("Expand All");
+    connect(expandAllAction, &QAction::triggered, ui->modelVariablesTreeView, &QTreeView::expandAll);
+
+    QAction* collapseAllAction = contextMenu->addAction("Collapse All");
+    connect(collapseAllAction, &QAction::triggered, ui->modelVariablesTreeView, &QTreeView::collapseAll);
+
     // recent files
     QVBoxLayout* vbox = new QVBoxLayout();
 
@@ -177,6 +186,10 @@ MainWindow::MainWindow(QWidget *parent)
 
     ui->modelVariablesTreeView->setModel(modelVariablesTreeModel);
 
+    connect(ui->modelVariablesTreeView, &QTreeView::customContextMenuRequested, this, [this](const QPoint &pos) {
+        contextMenu->exec(ui->modelVariablesTreeView->mapToGlobal(pos));
+    });
+
     // variable tool buttons
     connect(ui->filterLineEdit, &QLineEdit::textChanged, variablesFilterModel, &VariablesFilterModel::setFilterFixedString);
     connect(ui->filterParameterVariablesToolButton, &QToolButton::clicked, variablesFilterModel, &VariablesFilterModel::setFilterParamterVariables);
diff --git a/fmusim-gui/MainWindow.h b/fmusim-gui/MainWindow.h
index f6067ee7..0323aafe 100644
--- a/fmusim-gui/MainWindow.h
+++ b/fmusim-gui/MainWindow.h
@@ -7,6 +7,7 @@
 #include <QComboBox>
 #include <QFileSystemModel>
 #include <QMap>
+#include <QMenu>
 
 QT_BEGIN_NAMESPACE
 namespace Ui {
@@ -48,6 +49,7 @@ class MainWindow : public QMainWindow
     QDoubleValidator *stopTimeValidator;
     QFileSystemModel filesModel;
     QComboBox* interfaceTypeComboBox;
+    QMenu* contextMenu;
     FMIModelDescription* modelDescription = nullptr;
     FMIBuildDescription* buildDescription = nullptr;
     QString unzipdir;
@@ -80,5 +82,6 @@ private slots:
     void simulationFinished();
     void buildPlatformBinary();
     void showModelVariablesListView(bool show);
+
 };
 #endif // MAINWINDOW_H
diff --git a/fmusim-gui/MainWindow.ui b/fmusim-gui/MainWindow.ui
index c9bd5a85..a5817073 100644
--- a/fmusim-gui/MainWindow.ui
+++ b/fmusim-gui/MainWindow.ui
@@ -861,7 +861,7 @@
      <item row="1" column="0">
       <widget class="QStackedWidget" name="modelVariablesStackedWidget">
        <property name="currentIndex">
-        <number>1</number>
+        <number>0</number>
        </property>
        <widget class="QWidget" name="treeViewPage">
         <layout class="QGridLayout" name="gridLayout_17">
@@ -879,6 +879,9 @@
          </property>
          <item row="0" column="0">
           <widget class="QTreeView" name="modelVariablesTreeView">
+           <property name="contextMenuPolicy">
+            <enum>Qt::CustomContextMenu</enum>
+           </property>
            <property name="frameShape">
             <enum>QFrame::NoFrame</enum>
            </property>