diff --git a/playground/Demo/Demo28/Main.snow b/playground/Demo/Demo28/Main.snow
index 3ce709a..41daa1e 100644
--- a/playground/Demo/Demo28/Main.snow
+++ b/playground/Demo/Demo28/Main.snow
@@ -21,6 +21,7 @@ module: Main
                 return this.name
             end body
         end function
+    end struct
 
     // 程序入口
     function: main
@@ -28,5 +29,7 @@ module: Main
         body:
             // 实例化一个叫A的Animal,并且调用构造函数
 			declare a: Animal = new Animal("GenericAnimal")
+			a.getName()
+		end body
     end function
 end module
\ No newline at end of file