diff --git a/RScriptEngine.cs b/RScriptEngine.cs
index c5d6bf3..46fbd22 100644
--- a/RScriptEngine.cs
+++ b/RScriptEngine.cs
@@ -171,7 +171,7 @@ namespace Convention.RScript
             parser = new(new());
             //parser.Deserialize(data.CompileParser);
             context = CreateContext(data, import, variables);
-            return context.RunAsync(parser);
+            yield return context.RunAsync(parser);
         }
     }
 }