I didn't make it!
I DONT KNOW HOW TO? COULD SOMEBODY PLEASE TELL ME HOW TO BIND SENTANCES? THANKS, I REALLY APPRECIATE IT.
Type this in your console:
/bind j say "Hi this is my message" (Replace "j" with whatever you want, you can bind as many keys as you like but only 1 message per key)
So everytime you press that key, "Hi this is my message" will come up on the screen :)