diff --git a/WebRTCiOSSDK/api/AntMediaClient.swift b/WebRTCiOSSDK/api/AntMediaClient.swift
index 77e606a..5c623f7 100644
--- a/WebRTCiOSSDK/api/AntMediaClient.swift
+++ b/WebRTCiOSSDK/api/AntMediaClient.swift
@@ -1110,6 +1110,16 @@ open class AntMediaClient: NSObject, AntMediaClientProtocol {
         }
     }
     
+    public func forceStreamQuality(resolutionHeight:Int, streamId:String) {
+        if (self.isWebSocketConnected)
+        {
+            self.webSocket?.write(string: [COMMAND: FORCE_STREAM_QUALITY_INFO, STREAM_ID: (self.playerStreamId!), TRACK_ID:streamId, STREAM_HEIGHT_FIELD: resolutionHeight].json)
+        }
+        else {
+            AntMediaClient.printf("Websocket is not connected")
+        }
+    }
+    
     public func registerStatsListener(for streamId:String, timeInterval:Double = 5) {
         self.rtcStatsTimer?.invalidate();
         
diff --git a/WebRTCiOSSDK/api/AntMediaClientProtocol.swift b/WebRTCiOSSDK/api/AntMediaClientProtocol.swift
index 285d96a..18ac219 100644
--- a/WebRTCiOSSDK/api/AntMediaClientProtocol.swift
+++ b/WebRTCiOSSDK/api/AntMediaClientProtocol.swift
@@ -260,6 +260,12 @@ public protocol AntMediaClientProtocol {
       If the resolution is set to 0, then automatic stream quality will be used according to the measured network speed.
      */
     func forStreamQuality(resolutionHeight:Int);
+    
+    /**
+     - resolutionHeight: The height to be forced. If you set the height to zero, it will become auto
+     - streamId: The streamId or subtrack Id to change the resolution
+     */
+    func forceStreamQuality(resolutionHeight:Int, streamId:String)
     /**
      It get webrtc statistis and calls completionHandler.  There is a sample code for below to get the audio level
      in the application latyer