diff --git a/comfy_api/v3/ui.py b/comfy_api/v3/ui.py
index 644bc4ca3..4094812e0 100644
--- a/comfy_api/v3/ui.py
+++ b/comfy_api/v3/ui.py
@@ -475,11 +475,12 @@ class PreviewVideo(_UIOutput):
 
 
 class PreviewUI3D(_UIOutput):
-    def __init__(self, values: list[SavedResult | dict], **kwargs):
-        self.values = values
+    def __init__(self, model_file, camera_info, **kwargs):
+        self.model_file = model_file
+        self.camera_info = camera_info
 
     def as_dict(self):
-        return {"result": self.values}
+        return {"result": [self.model_file, self.camera_info]}
 
 
 class PreviewText(_UIOutput):
diff --git a/comfy_extras/v3/nodes_load_3d.py b/comfy_extras/v3/nodes_load_3d.py
index af12b497a..0068da40f 100644
--- a/comfy_extras/v3/nodes_load_3d.py
+++ b/comfy_extras/v3/nodes_load_3d.py
@@ -148,7 +148,7 @@ class Preview3D(io.ComfyNode):
 
     @classmethod
     def execute(cls, model_file, camera_info=None):
-        return io.NodeOutput(ui=ui.PreviewUI3D([model_file, camera_info], cls=cls))
+        return io.NodeOutput(ui=ui.PreviewUI3D(model_file, camera_info, cls=cls))
 
 
 class Preview3DAnimation(io.ComfyNode):
@@ -169,7 +169,7 @@ class Preview3DAnimation(io.ComfyNode):
 
     @classmethod
     def execute(cls, model_file, camera_info=None):
-        return io.NodeOutput(ui=ui.PreviewUI3D([model_file, camera_info], cls=cls))
+        return io.NodeOutput(ui=ui.PreviewUI3D(model_file, camera_info, cls=cls))
 
 
 NODES_LIST = [