diff --git a/Source/Editor/Surface/Archetypes/Parameters.cs b/Source/Editor/Surface/Archetypes/Parameters.cs
index 3383e7662..905f793c9 100644
--- a/Source/Editor/Surface/Archetypes/Parameters.cs
+++ b/Source/Editor/Surface/Archetypes/Parameters.cs
@@ -22,15 +22,97 @@ namespace FlaxEditor.Surface.Archetypes
     [HideInEditor]
     public static class Parameters
     {
+        /// <summary>
+        /// Surface node type for parameters group Get/Set nodes.
+        /// </summary>
+        /// <seealso cref="FlaxEditor.Surface.SurfaceNode" />
+        public abstract class SurfaceNodeParamsBase : SurfaceNode
+        {
+            /// <summary>
+            /// The combobox for picking parameter.
+            /// </summary>
+            protected ComboBoxElement _combobox;
+
+            /// <summary>
+            /// Fag used to block layout updated when updating node.
+            /// </summary>
+            protected bool _isUpdateLocked;
+
+            /// <inheritdoc />
+            protected SurfaceNodeParamsBase(uint id, VisjectSurfaceContext context, NodeArchetype nodeArch, GroupArchetype groupArch)
+            : base(id, context, nodeArch, groupArch)
+            {
+            }
+
+            /// <summary>
+            /// Gets the selected parameter.
+            /// </summary>
+            /// <returns>Surface parameter object or null if nothing selected or cannot find it.</returns>
+            protected SurfaceParameter GetSelected()
+            {
+                if (Surface != null)
+                    return Surface.GetParameter(_combobox.SelectedItem);
+                return Context.GetParameter((Guid)Values[0]);
+            }
+
+            /// <summary>
+            /// Updates the combo box.
+            /// </summary>
+            protected void UpdateCombo()
+            {
+                if (_isUpdateLocked)
+                    return;
+                _isUpdateLocked = true;
+                if (_combobox == null)
+                {
+                    _combobox = GetChild<ComboBoxElement>();
+                    _combobox.SelectedIndexChanged += OnSelectedChanged;
+                }
+                string toSelect = null;
+                Guid loadedSelected = (Guid)Values[0];
+                _combobox.ClearItems();
+                var parameters = Surface.Parameters;
+                for (int i = 0; i < parameters.Count; i++)
+                {
+                    var param = parameters[i];
+                    if (!param.IsPublic && !Surface.CanShowPrivateParameters)
+                        continue;
+                    _combobox.AddItem(param.Name);
+                    if (param.ID == loadedSelected)
+                        toSelect = param.Name;
+                }
+                _combobox.SelectedItem = toSelect;
+                _isUpdateLocked = false;
+            }
+
+            private void OnSelectedChanged(ComboBox cb)
+            {
+                if (_isUpdateLocked)
+                    return;
+                var selected = GetSelected();
+                var selectedID = selected?.ID ?? Guid.Empty;
+                if (selectedID != (Guid)Values[0])
+                    Set(selected, ref selectedID);
+            }
+
+            /// <summary>
+            /// Sets the selected parameter.
+            /// </summary>
+            /// <param name="selected">Parameter.</param>
+            /// <param name="selectedID">Parameter identifier.</param>
+            protected virtual void Set(SurfaceParameter selected, ref Guid selectedID)
+            {
+                SetValue(0, selectedID);
+            }
+        }
+
         /// <summary>
         /// Surface node type for parameters group Get node.
         /// </summary>
         /// <seealso cref="FlaxEditor.Surface.SurfaceNode" />
-        public class SurfaceNodeParamsGet : SurfaceNode, IParametersDependantNode
+        public class SurfaceNodeParamsGet : SurfaceNodeParamsBase, IParametersDependantNode
         {
-            private ComboBoxElement _combobox;
             private readonly List<ISurfaceNodeElement> _dynamicChildren = new List<ISurfaceNodeElement>();
-            private bool _isUpdateLocked;
             private ScriptType _layoutType;
             private NodeElementArchetype[] _layoutElements;
 
@@ -306,49 +388,6 @@ namespace FlaxEditor.Surface.Archetypes
                 UpdateTitle();
             }
 
-            private void UpdateCombo()
-            {
-                if (_isUpdateLocked)
-                    return;
-                _isUpdateLocked = true;
-                if (_combobox == null)
-                {
-                    _combobox = (ComboBoxElement)_children[0];
-                    _combobox.SelectedIndexChanged += OnSelectedChanged;
-                }
-                int toSelect = -1;
-                Guid loadedSelected = (Guid)Values[0];
-                _combobox.ClearItems();
-                for (int i = 0; i < Surface.Parameters.Count; i++)
-                {
-                    var param = Surface.Parameters[i];
-                    _combobox.AddItem(param.Name);
-                    if (param.ID == loadedSelected)
-                        toSelect = i;
-                }
-                _combobox.SelectedIndex = toSelect;
-                _isUpdateLocked = false;
-            }
-
-            private void OnSelectedChanged(ComboBox cb)
-            {
-                if (_isUpdateLocked)
-                    return;
-                var selected = GetSelected();
-                var selectedID = selected?.ID ?? Guid.Empty;
-                SetValue(0, selectedID);
-            }
-
-            private SurfaceParameter GetSelected()
-            {
-                if (Surface != null)
-                {
-                    var selectedIndex = _combobox.SelectedIndex;
-                    return selectedIndex >= 0 && selectedIndex < Surface.Parameters.Count ? Surface.Parameters[selectedIndex] : null;
-                }
-                return Context.GetParameter((Guid)Values[0]);
-            }
-
             private void ClearDynamicElements()
             {
                 for (int i = 0; i < _dynamicChildren.Count; i++)
@@ -463,15 +502,19 @@ namespace FlaxEditor.Surface.Archetypes
                 else if (!_isUpdateLocked)
                 {
                     _isUpdateLocked = true;
-                    int toSelect = -1;
+                    string toSelect = null;
                     Guid loadedSelected = (Guid)Values[0];
-                    for (int i = 0; i < Surface.Parameters.Count; i++)
+                    var parameters = Surface.Parameters;
+                    for (int i = 0; i < parameters.Count; i++)
                     {
-                        var param = Surface.Parameters[i];
+                        var param = parameters[i];
                         if (param.ID == loadedSelected)
-                            toSelect = i;
+                        {
+                            toSelect = param.Name;
+                            break;
+                        }
                     }
-                    _combobox.SelectedIndex = toSelect;
+                    _combobox.SelectedItem = toSelect;
                     _isUpdateLocked = false;
                 }
                 UpdateLayout();
@@ -817,66 +860,23 @@ namespace FlaxEditor.Surface.Archetypes
         /// Surface node type for parameters group Set node.
         /// </summary>
         /// <seealso cref="FlaxEditor.Surface.SurfaceNode" />
-        public class SurfaceNodeParamsSet : SurfaceNode, IParametersDependantNode
+        public class SurfaceNodeParamsSet : SurfaceNodeParamsBase, IParametersDependantNode
         {
-            private ComboBoxElement _combobox;
-            private bool _isUpdateLocked;
-
             /// <inheritdoc />
             public SurfaceNodeParamsSet(uint id, VisjectSurfaceContext context, NodeArchetype nodeArch, GroupArchetype groupArch)
             : base(id, context, nodeArch, groupArch)
             {
             }
 
-            private void UpdateCombo()
+            /// <inheritdoc />
+            protected override void Set(SurfaceParameter selected, ref Guid selectedID)
             {
-                if (_isUpdateLocked)
-                    return;
-                _isUpdateLocked = true;
-                if (_combobox == null)
+                SetValues(new[]
                 {
-                    _combobox = GetChild<ComboBoxElement>();
-                    _combobox.SelectedIndexChanged += OnSelectedChanged;
-                }
-                int toSelect = -1;
-                Guid loadedSelected = (Guid)Values[0];
-                _combobox.ClearItems();
-                for (int i = 0; i < Surface.Parameters.Count; i++)
-                {
-                    var param = Surface.Parameters[i];
-                    _combobox.AddItem(param.Name);
-                    if (param.ID == loadedSelected)
-                        toSelect = i;
-                }
-                _combobox.SelectedIndex = toSelect;
-                _isUpdateLocked = false;
-            }
-
-            private void OnSelectedChanged(ComboBox cb)
-            {
-                if (_isUpdateLocked)
-                    return;
-                var selected = GetSelected();
-                var selectedID = selected?.ID ?? Guid.Empty;
-                if (selectedID != (Guid)Values[0])
-                {
-                    SetValues(new[]
-                    {
-                        selectedID,
-                        selected != null ? TypeUtils.GetDefaultValue(selected.Type) : null,
-                    });
-                    UpdateUI();
-                }
-            }
-
-            private SurfaceParameter GetSelected()
-            {
-                if (Surface != null)
-                {
-                    var selectedIndex = _combobox.SelectedIndex;
-                    return selectedIndex >= 0 && selectedIndex < Surface.Parameters.Count ? Surface.Parameters[selectedIndex] : null;
-                }
-                return Context.GetParameter((Guid)Values[0]);
+                    selectedID,
+                    selected != null ? TypeUtils.GetDefaultValue(selected.Type) : null,
+                });
+                UpdateUI();
             }
 
             /// <inheritdoc />
diff --git a/Source/Editor/Surface/VisjectSurface.cs b/Source/Editor/Surface/VisjectSurface.cs
index e3bb94bcc..c4a8d31d3 100644
--- a/Source/Editor/Surface/VisjectSurface.cs
+++ b/Source/Editor/Surface/VisjectSurface.cs
@@ -583,6 +583,11 @@ namespace FlaxEditor.Surface
         /// </summary>
         public virtual bool CanSetParameters => false;
 
+        /// <summary>
+        /// Gets a value indicating whether surface private parameters can be used, otherwise they will remain hidden.
+        /// </summary>
+        public virtual bool CanShowPrivateParameters => false;
+
         /// <summary>
         /// True of the context menu should make use of a description panel drawn at the bottom of the menu
         /// </summary>
diff --git a/Source/Editor/Surface/VisjectSurfaceContext.cs b/Source/Editor/Surface/VisjectSurfaceContext.cs
index 0d10aa230..560a7c1d6 100644
--- a/Source/Editor/Surface/VisjectSurfaceContext.cs
+++ b/Source/Editor/Surface/VisjectSurfaceContext.cs
@@ -254,9 +254,10 @@ namespace FlaxEditor.Surface
         public SurfaceParameter GetParameter(Guid id)
         {
             SurfaceParameter result = null;
-            for (int i = 0; i < Parameters.Count; i++)
+            var parameters = Parameters;
+            for (int i = 0; i < parameters.Count; i++)
             {
-                var parameter = Parameters[i];
+                var parameter = parameters[i];
                 if (parameter.ID == id)
                 {
                     result = parameter;
@@ -274,9 +275,10 @@ namespace FlaxEditor.Surface
         public SurfaceParameter GetParameter(string name)
         {
             SurfaceParameter result = null;
-            for (int i = 0; i < Parameters.Count; i++)
+            var parameters = Parameters;
+            for (int i = 0; i < parameters.Count; i++)
             {
-                var parameter = Parameters[i];
+                var parameter = parameters[i];
                 if (parameter.Name == name)
                 {
                     result = parameter;
diff --git a/Source/Editor/Surface/VisualScriptSurface.cs b/Source/Editor/Surface/VisualScriptSurface.cs
index 2f70ee340..57aa29d67 100644
--- a/Source/Editor/Surface/VisualScriptSurface.cs
+++ b/Source/Editor/Surface/VisualScriptSurface.cs
@@ -187,6 +187,9 @@ namespace FlaxEditor.Surface
         /// <inheritdoc />
         public override bool CanSetParameters => true;
 
+        /// <inheritdoc />
+        public override bool CanShowPrivateParameters => true;
+
         /// <inheritdoc />
         public override bool UseContextMenuDescriptionPanel => true;