How to extend FSavedMove_Character class to include additional variables

After creating a child class of FSavedMove_Character, I was able to extend it to include some additional flags, however I would also like to extend it to include some custom floats.
Besides defining them in the FSavedMove_Character child class that I have created, are there any functions that need to be overridden?

Additionally, any guidance on testing to ensure that my custom variables are actually being sent to the server would be appreciated.