Exporting Coded Assets

Hi, i have been doing some programming for a small game that i’m working on with a small team. I have made some new custom classes with code and then made some blueprints that inherit from those classes with some added functionality.
Now i need to send these to another person that is also working with UE4 who is making the levels for the game. How would i go about sending these assets to the other person?
I have tried using the migrate feature but it does not work with an of my blueprints that inherit from a custom made C++ class because the code don’t seem to transfer over with the rest of the asset.

Am i missing something or do i need to send over the entire project to him or something?