how can i add mobs on a map

[how can i add mobs on a map]

i want to add mobs on a map @warp "1@def02" 

 

20 poring 10 lunatic 

 

i know someone has posted as same as this request  , but i cant find it , any help please ?

[snow effect on prontera]

i had a problem , wich is the city is snowing and it cannot be removed or disabled or anything , i tried to use commands to stop it but it doesnt work , and finally i know right now why .  the data.grf is the problem , i tried to exchange it with KRO data.grf and it works " no snowy " but i cant keep it , because there's alot of errors  it didnt match with mine data , so can i edit my data.grf by using grf editor and remove this effect ?