Keyboard imitation on Android tablet HC05

i would like to have 2 buttons (for exemple 1 for "Enter" the other for "Space") on an arduino, when i press one of them the bluetooth connection with the android tablet will replicate it on the screen.
Basically i want to do a pageflip with bluetooth but when i do it with my purchased pedal it is connected as a keyboard and the one i made android refuse to connect to it but with serial bluetooth applications it works

So i would like some help with the connection maybe i don't have the bluetooth module for that usage.

Thanks for your help