diff --git a/src/main/java/service/Service.kt b/src/main/java/service/Service.kt
index 7fe877d..33174cb 100644
--- a/src/main/java/service/Service.kt
+++ b/src/main/java/service/Service.kt
@@ -42,7 +42,7 @@ class Service {
     }
 
     fun save(cls: KClass<*>, instance: Any): Boolean {
-        val model = instance::class.functions.filter { "toJFinal" == it.name }.first() as Model<*>
+        val model = instance::class.functions.filter { "toJFinal" == it.name }.first().call(instance) as Model<*>
         return model.save()
     }