Get more than level 5 on creeps

How can I set it so you can get all levels on netrual hostile but not only lvl 5? because I wanna have it they can get all the 1000 levels on netrual hostile in my rpg map :)

You mean, using the Possession ability?

No, he means: when you gain lvl 5 you cant get exp on creeps anymore.
And i'v been wondering about that my self ^_^

Oh, that's a piece of cake. In Gameplay Constants there is a field which dictates how much experience you get from each level of creep.

Have fun filling it in up to level 1000 ^_^

Though an ambitious idea, Heroes can only go up to level 255 Normally. You can use triggers to give the Stat Bonuses and such past that, but the Bar will only go to 255.