diff --git a/Source/Editor/Surface/VisjectSurfaceWindow.cs b/Source/Editor/Surface/VisjectSurfaceWindow.cs
index 181ca2991..e67d04b1b 100644
--- a/Source/Editor/Surface/VisjectSurfaceWindow.cs
+++ b/Source/Editor/Surface/VisjectSurfaceWindow.cs
@@ -338,6 +338,11 @@ namespace FlaxEditor.Surface
             //new LimitAttribute(float.MinValue, float.MaxValue, 0.1f),
         };
 
+        /// <summary>
+        /// True if show only public properties, otherwise will display all properties.
+        /// </summary>
+        protected bool ShowOnlyPublic = true;
+
         /// <inheritdoc />
         public override DisplayStyle Style => DisplayStyle.InlineIntoParent;
 
@@ -367,7 +372,7 @@ namespace FlaxEditor.Surface
             for (int i = 0; i < parameters.Count; i++)
             {
                 var p = parameters[i];
-                if (!p.IsPublic)
+                if (!p.IsPublic && ShowOnlyPublic)
                     continue;
 
                 var pIndex = i;
@@ -421,6 +426,8 @@ namespace FlaxEditor.Surface
                     Tag = pIndex,
                     Drag = OnDragParameter
                 };
+                if (!p.IsPublic)
+                    propertyLabel.TextColor = propertyLabel.TextColor.RGBMultiplied(0.7f);
                 var tooltip = (TooltipAttribute)attributes.FirstOrDefault(x => x is TooltipAttribute);
                 propertyLabel.MouseLeftDoubleClick += (label, location) => StartParameterRenaming(pIndex, label);
                 propertyLabel.SetupContextMenu += OnPropertyLabelSetupContextMenu;
@@ -491,6 +498,7 @@ namespace FlaxEditor.Surface
             menu.AddButton("Rename", () => StartParameterRenaming(index, label));
             menu.AddButton("Edit attributes...", () => EditAttributesParameter(index, label));
             menu.AddButton("Delete", () => DeleteParameter(index));
+            OnParamContextMenu(index, menu);
         }
 
         private void StartParameterRenaming(int index, Control label)
@@ -556,6 +564,15 @@ namespace FlaxEditor.Surface
             window.VisjectSurface.Undo.AddAction(action);
             action.Do();
         }
+
+        /// <summary>
+        /// Called to display additional context options for a parameter.
+        /// </summary>
+        /// <param name="index">The zero-based parameter index.</param>
+        /// <param name="menu">The context menu.</param>
+        protected virtual void OnParamContextMenu(int index, FlaxEditor.GUI.ContextMenu.ContextMenu menu)
+        {
+        }
     }
 
     /// <summary>
diff --git a/Source/Editor/Windows/Assets/VisualScriptWindow.cs b/Source/Editor/Windows/Assets/VisualScriptWindow.cs
index 95e730bea..729fc71cd 100644
--- a/Source/Editor/Windows/Assets/VisualScriptWindow.cs
+++ b/Source/Editor/Windows/Assets/VisualScriptWindow.cs
@@ -38,6 +38,63 @@ namespace FlaxEditor.Windows.Assets
             public bool Enabled;
         }
 
+        private sealed class EditParamAccessAction : IUndoAction
+        {
+            public IVisjectSurfaceWindow Window;
+            public int Index;
+            public bool Before;
+            public bool After;
+
+            public string ActionString => "Edit parameter access";
+
+            public void Do()
+            {
+                Set(After);
+            }
+
+            public void Undo()
+            {
+                Set(Before);
+            }
+
+            private void Set(bool value)
+            {
+                var param = Window.VisjectSurface.Parameters[Index];
+                param.IsPublic = value;
+                Window.VisjectSurface.OnParamEdited(param);
+            }
+
+            public void Dispose()
+            {
+                Window = null;
+            }
+        }
+
+        private sealed class VisualParametersEditor : ParametersEditor
+        {
+            public VisualParametersEditor()
+            {
+                ShowOnlyPublic = false;
+            }
+
+            protected override void OnParamContextMenu(int index, ContextMenu menu)
+            {
+                var window = (VisualScriptWindow)Values[0];
+                var param = window.Surface.Parameters[index];
+
+                // Parameter access level editing
+                var cmAccess = menu.AddChildMenu("Access");
+                {
+                    var b = cmAccess.ContextMenu.AddButton("Public", () => window.SetParamAccess(index, true));
+                    b.Checked = param.IsPublic;
+                    b.Enabled = window._canEdit;
+                    b = cmAccess.ContextMenu.AddButton("Private", () => window.SetParamAccess(index, false));
+                    b.Checked = !param.IsPublic;
+                    b.Enabled = window._canEdit;
+                }
+            }
+        }
+
         private sealed class PropertiesProxy
         {
             [EditorOrder(0), EditorDisplay("Options"), CustomEditor(typeof(OptionsEditor)), NoSerialize]
@@ -58,7 +115,7 @@ namespace FlaxEditor.Windows.Assets
             [EditorOrder(900), CustomEditor(typeof(FunctionsEditor)), NoSerialize]
             public VisualScriptWindow Window1;
 
-            [EditorOrder(1000), EditorDisplay("Parameters"), CustomEditor(typeof(ParametersEditor)), NoSerialize]
+            [EditorOrder(1000), EditorDisplay("Parameters"), CustomEditor(typeof(VisualParametersEditor)), NoSerialize]
             public VisualScriptWindow Window;
 
             [HideInEditor]
@@ -991,6 +1048,22 @@ namespace FlaxEditor.Windows.Assets
             UpdateToolstrip();
         }
 
+        private void SetParamAccess(int index, bool isPublic)
+        {
+            var param = Surface.Parameters[index];
+            if (param.IsPublic == isPublic)
+                return;
+            var action = new EditParamAccessAction
+            {
+                Window = this,
+                Index = index,
+                Before = param.IsPublic,
+                After = isPublic,
+            };
+            _undo.AddAction(action);
+            action.Do();
+        }
+
         /// <inheritdoc />
         public override void OnPlayBeginning()
         {