item script

Can someone help me with a script for a item? What I want is: Script Basic for the Items When a player suffer damage and  reach 'X'% HP he's healed by 'Y'% HP. And... If possible a buff trigger for the same item but 3 versions (3 different items but with the same above script + script...

Hi, this script is complicated, I tried doing this with what I see in item_bonus.txt but can't get it to work, please help.   If base STR is 90+, All State +1, MaxHP,MaxSP +1%, STR + 1 for each refine upgrade. When hunting monsters, EXP and DROP rate increased by 10%.