I am developing an app and would like to use cordova plugin: https://github.com/taejaehan/Cordova-Kakaotalk-Plugin

and works perfectly on android phone. but the problem is IOS that requries to add some codes at "appdelgate" file.

The publisher said I need to add following code

But as I know, I cannot access source file. do you have any idea how to insert this code using outsystems?

You can open the .NET IDE directly from Integration Studio.