Update filter.mdx

docs/features/plugin/functions/filter.mdx

@@ -68,6 +68,52 @@ class Filter:
 
 ---
 
+### 🆕 🧲 Toggle Filter Example: Adding Interactivity and Icons (New in Open WebUI 0.6.10)
+
+Filters can do more than simply modify text—they can expose UI toggles and display custom icons. For instance, you might want a filter that can be turned on/off with a user interface button, and displays a special icon in Open WebUI’s message input UI.
+
+Here’s how you could create such a toggle filter:
+
+```python
+from pydantic import BaseModel, Field
+from typing import Optional
+
+class Filter:
+    class Valves(BaseModel):
+        pass
+
+    def __init__(self):
+        self.valves = self.Valves()
+        self.toggle = True
+        # TIP: Use SVG Data URI!
+        self.icon = """data:image/svg+xml;base64,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"""
+        pass
+
+    async def inlet(
+        self, body: dict, __event_emitter__, __user__: Optional[dict] = None
+    ) -> dict:
+        await __event_emitter__(
+            {
+                "type": "status",
+                "data": {
+                    "description": "Toggled!!",
+                    "done": True,
+                    "hidden": False,
+                },
+            }
+        )
+        return body
+```
+
+#### 🖼️ What’s happening?
+- **toggle = True** creates a switch UI in Open WebUI—users can manually enable or disable the filter in real time.
+- **icon** (with a Data URI) will show up as a little image next to the filter’s name. You can use any SVG as long as it’s Data URI encoded!
+- **The `inlet` function** uses the `__event_emitter__` special argument to broadcast feedback/status to the UI, such as a little toast/notification that reads "Toggled!!"
+
+You can use these mechanisms to make your filters dynamic, interactive, and visually unique within Open WebUI’s plugin ecosystem.
+
+---
+
 ### 🎯 Key Components Explained
 
 #### 1️⃣ **`Valves` Class (Optional Settings)**