MUI help need

[Levoo]

I have a meteor spell but it isn't MUI and get bugged when 2 or more heros cast it. Please somebody make this spell MUI. I tried to make it with Event Response variable but i faild. I think Somebody can make it with JASS and local variables. Thanks. I attached the map(spell).

 

[watermelon_1234]

Here you go. ;D