How to make skill that will suck health and give them to caster (aka vampire)

[Corvus Sangreal]

RPG maker XP

If I want it to be attacking skill (target: opponent) I can't get monster heal itself, and if it is casted on caster (target: caster) then I can't drain health from victim (player in my case). Any ideas? I tried to make use of status effects but manage nothing with it.

So what I want is that my monster, vampire for example, in one attack hurt opponent and heal itself (if it is possible in same amount as he hurt player).

[Doctor Professor Nikolai]

use common events and make a skill called 'suck', 'absorb', etc.  Its kinda hard for me to explain

[Blizzard]

I guess that one script I posted some time ago is gone. =/ I'll see if I can dig it up. Should be collecting cyberdust somewhere on my hard disk.