Hey guys, i solved the question this way:
anim death
delay 10
offset 23 36
subentity coin
spawnframe 2 0 0 0 0
frame data/chars/b/b10.png
frame data/chars/b/b10.png
@cmd spawn01 "coin" 8 10 0 0
@cmd spawn01 "ring" 15 10 0 0
frame data/chars/b/b11.png
frame data/chars/b/b12.png
This way the enemy spawns 3 itens, using @cmd spawn01 idont need to use spawnframe anymore, @cmd spawn01 let me spawn how many items i wish.