New keyboard key usage at certain point ?

Working on a platformer-type game, I have the character able to shoot properly using the space bar, but I want the character to not be able to do this until a certain point. Any ideas ?

This is what I have now:

Keyboard, on "Space" pressed:

|

|-------> Player, is mirrored: Player, spawn Attack on Layer 1 ( IP 1 )

|                                 Attack, set Bullet angle of motion 180

|

|-------> Player, not mirrored: Player, spawn Attack on Layer 1 ( IP 1 )

                                   Attack, set Bullet angle of motion 0

Create a global variable..

Keyboard, on "Space" pressed

(condition if)CanShoot=yes

-------> Shoot

When you don't want him to shoot set CanShoot=no