[Request] Roll System

[Capell]

Hey ...

I have been searching around for a roll system but can't find one.. I'm wondering of it's possible to make a roll system in a trigger.. I'm a complete noob at triggers..

I need a trigger so when a player types -roll, it shows a text saying 'Triggering unit rolled x" where x is a random number between 1 - 100

EDIT: I use World Editor and I don't know how to use the custom code and stuff in JASS