Trouble with the alterable value

I have an enemy with an alterable value of 3 and 2 rules saying

"IF bullet collides with enemy THEN sub 1 from alterable value"
"IF alterable value is = 0 THEN destroy enemy.

I tested it and ran the debugger. The bullets are definetly making contact but the enemy is not getting destroyed after 3 hits.

Merry Christmas! Happy Haunaka! Happy Quanza! Happy Holidays!,
Gerblegod

Try adding,

bullet collides with enemy + enemy alt value greater than 0

or

Alt value is equal or less than 0, then destroy.

Because maybe if you shoot quick it goes past 0, since you have no code which says it can't.

Also are you using duplicates?

Thank you,
apparently it was going past 0.
I fixed it