I checked this earlier. I am able to use OData connector as it only able to fetch the data but no option of modifying the data back. In this way no use of OData connector since I am able to fetch the data using APIs from REST connector.
You can check LLodi Writer Connector, that allows you to connect with REST APIs and do actions in your desired app directly from Qlik. You can also use the LLodi Writer Extension to do actions from your Dashboard.