diff --git a/Source/Editor/Content/Import/ModelImportEntry.cs b/Source/Editor/Content/Import/ModelImportEntry.cs
index 3b5ba83a7..88388b8c3 100644
--- a/Source/Editor/Content/Import/ModelImportEntry.cs
+++ b/Source/Editor/Content/Import/ModelImportEntry.cs
@@ -292,9 +292,9 @@ namespace FlaxEditor.Content.Import
         public bool SplitObjects { get; set; } = false;
 
         /// <summary>
-        /// The zero-based index for the mesh/animation clip to import. If the source file has more than one mesh/animation it can be used to pick a desire object.
+        /// The zero-based index for the mesh/animation clip to import. If the source file has more than one mesh/animation it can be used to pick a desire object. Default -1 imports all objects.
         /// </summary>
-        [EditorOrder(2010), DefaultValue(-1), EditorDisplay("Splitting"), Tooltip("The zero-based index for the mesh/animation clip to import. If the source file has more than one mesh/animation it can be used to pick a desire object.")]
+        [EditorOrder(2010), DefaultValue(-1), EditorDisplay("Splitting"), Tooltip("The zero-based index for the mesh/animation clip to import. If the source file has more than one mesh/animation it can be used to pick a desire object. Default -1 imports all objects.")]
         public int ObjectIndex { get; set; } = -1;
 
         [StructLayout(LayoutKind.Sequential)]
diff --git a/Source/Editor/Viewport/Previews/AnimatedModelPreview.cs b/Source/Editor/Viewport/Previews/AnimatedModelPreview.cs
index ca5cd22d0..f3b1d263e 100644
--- a/Source/Editor/Viewport/Previews/AnimatedModelPreview.cs
+++ b/Source/Editor/Viewport/Previews/AnimatedModelPreview.cs
@@ -20,7 +20,7 @@ namespace FlaxEditor.Viewport.Previews
         private AnimatedModel _previewModel;
         private StaticModel _floorModel;
         private ContextMenuButton _showCurrentLODButton;
-        private bool _playAnimation;
+        private bool _playAnimation, _playAnimationOnce;
         private float _playSpeed = 1.0f;
 
         /// <summary>
@@ -234,6 +234,17 @@ namespace FlaxEditor.Viewport.Previews
             _previewModel.UpdateAnimation();
         }
 
+        /// <summary>
+        /// Sets the weight of the blend shape and updates the preview model (if not animated right now).
+        /// </summary>
+        /// <param name="name">The blend shape name.</param>
+        /// <param name="value">The normalized weight of the blend shape (in range -1:1).</param>
+        public void SetBlendShapeWeight(string name, float value)
+        {
+            _previewModel.SetBlendShapeWeight(name, value);
+            _playAnimationOnce = true;
+        }
+
         private void OnBegin(RenderTask task, GPUContext context)
         {
             if (!ScaleToFit)
@@ -380,8 +391,9 @@ namespace FlaxEditor.Viewport.Previews
             base.Update(deltaTime);
 
             // Manually update animation
-            if (PlayAnimation)
+            if (PlayAnimation || _playAnimationOnce)
             {
+                _playAnimationOnce = false;
                 _previewModel.UpdateAnimation();
             }
             else
diff --git a/Source/Editor/Windows/Assets/SkinnedModelWindow.cs b/Source/Editor/Windows/Assets/SkinnedModelWindow.cs
index ea5240cb5..6904ebbfb 100644
--- a/Source/Editor/Windows/Assets/SkinnedModelWindow.cs
+++ b/Source/Editor/Windows/Assets/SkinnedModelWindow.cs
@@ -341,7 +341,7 @@ namespace FlaxEditor.Windows.Assets
                             editor.FloatValue.MinValue = -1;
                             editor.FloatValue.MaxValue = 1;
                             editor.FloatValue.SlideSpeed = 0.01f;
-                            editor.FloatValue.ValueChanged += () => { proxy.Window._preview.PreviewActor.SetBlendShapeWeight(blendShape, editor.FloatValue.Value); };
+                            editor.FloatValue.ValueChanged += () => { proxy.Window._preview.SetBlendShapeWeight(blendShape, editor.FloatValue.Value); };
                         }
                     }
                 }