Scroll Shooter Power Up

I created a scroll shooter and have been trying to edit in Power Ups, I am using a Global Variable (EnemyDeath) which counts amount of times an enemy has been killed in a single game time to increase difficulty, I want to use this variable to count when there are a certain amount of enemy deaths, send out a power up going horizontally. I already have this code so far.

EnemyDeath = 5 Create Object (Sprite) on layer “Game” at (random(LayoutWidth) , random(LayoutHeight))

Set Bullet speed to random(10, 80)

Set opacity to Self.Bullet.Speed

but when I play the game, the game spawns millions of power ups when I only want the one.

Is there a way I can use this to create a single moving power up or is there any other method?

Post .capx?

that's because once you are hitting the number it's always true, so you need to add to the number once reached

EnemyDeath = 5 Create Object (Sprite) on layer “Game” at (random(LayoutWidth) , random(LayoutHeight))

set enemy death to enemy death+5

Set Bullet speed to random(10, 80)

Set opacity to Self.Bullet.Speed