An Item problem

Currenty My Heros Str is 3 or 4 and So there Damg is is like 7-8 I want to Make an item That Adds The Damg Not Like This 7-8+8Damg Anyone know how?

I believe that the only way to do this is to use triggers to modify the units strength directly. You would need to have a trigger that activated when the unit picked up the item and then modify the heros strength up the amount necessary to give the increase in damage you want. If you dont know how much strength to add I believe in the global constants you can find out how much strength is need for a damage increase. There may be an easier way to do this but this should give you a place to start.