无法在PARSE Sdk上从iOS更新对象

I have tried to update Parse object from Parse CloudCode function. I want to update status_id for one particular entry whose objectId is "vZveFx3KcP”. Whenever i call following function no entry gets updated. but whenever i added manual entry or entry from Android device it gets updated without any issue. For iOS i am using latest Parse version "1.11.0". I have tried to update Parse object from Parse