diff --git a/library/BuildProfile.ets b/library/BuildProfile.ets
index 56a40f4..f787c60 100644
--- a/library/BuildProfile.ets
+++ b/library/BuildProfile.ets
@@ -1,5 +1,6 @@
 export default class BuildProfile { 
-	static readonly HAR_VERSION = '3.0.0-rc.0';
+	static readonly HAR_VERSION = '3.0.0-rc.4';
 	static readonly BUILD_MODE_NAME = 'debug';
 	static readonly DEBUG = true;
+	static readonly TARGET_NAME = 'default';
 }
\ No newline at end of file
diff --git a/library/src/main/ets/components/ImageKnifeComponent.ets b/library/src/main/ets/components/ImageKnifeComponent.ets
index ec01324..302a08f 100644
--- a/library/src/main/ets/components/ImageKnifeComponent.ets
+++ b/library/src/main/ets/components/ImageKnifeComponent.ets
@@ -85,7 +85,10 @@ export struct ImageKnifeComponent {
             ImageKnife.getInstance().execute(this.getRequest(this.currentWidth, this.currentHeight))
           }
         }
-      })
+      }).sourceSize({
+          width:250,
+          height:250
+    })
   }
 
   watchImageKnifeOption() {