How can I send input to the Flyff client with C#?

I tried all types of ways but I found out the flyff client just have higher privilege's than my software, I tried running it as admin(Visual studio or exe) and no luck.

Anyone know how can I do it? I also tried setting uiAccess to true but failed.

Maybe you want to give more informations:

-Official Server? If yes wich way did you try to bypass GG?
-If Private Server: Wich one?
-Showing the codepart wich is sending the "Key" to the client.