change kind of bullets with new ite

[funkypanky]

GAMEMAKER QUESTION!
change kind of bullets with new Item

Hello everybody !
Excuse my bad English! (i'm russian:) )
i have a question:
i need to release one stuff- i have a little blank of game.
Main player can shoot and collect item. Bullets are yellow in normal state(
obj_bullet
)
My player must shoots with green bullets,when i collect item.(new kind of bullet is a second object in scene-
obj_bullet_2
)
Can you help me? How release this stuff?
P.S.:source is applied
MY Source