I want to change the size of the slime

[HeadStar]

on place:
if event-block is Reinforced Deepslate:
cancel event
subtract 1 of Reinforced Deepslate from player's inventory
spawn slime
set {_slime} to last spawned entity
set max health of {_slime} to 50
heal {_slime}
set {_slime}'s display name to "%{%event-player%.team}%팀의 코어"
set slime size of {_slime} to 5 #big

I did this, but it doesn't work. (Skellet installed)

 

[DanRub]

I dont really understand what do you want from this skript, can you explain?