rset and rget

[TYL3R B™]

Hey i was wondering.
Im usin rget and rset
But i am unsure on how to add things to it Without overwriting what was already there.
Say i have information in it like:

My Name: Tyler
Then next time i use it i want to add my Hobby.
My Hobby: Football

So in the registry there will be
My Name:Tyler
My Hobby: Football

Thanks,
Tyler