How to Make All Monsters Disappear by using Self Switch ?

Hi sorry about my bad English 
I've a problem here. I want to make disappear all monsters after battle. Can you help ?

Where you set the battle start, it'll create sort of a conditional branch. If win and if lose. (I think it'll show if lose if you check off the option to continue after losing though). Anyway, under If Win, just turn on a switch. Also, make a new empty event page for each monster you want to have disappear and set that event page's condition as the switch you want turned on.

Thanks a lot How can I give you +rep ?

I don't know, I think you need to have so many posts before you're able to do that. Rep around here doesn't matter anyway, so it's fine if you don't lol.

allright then.. thanks again..