i have problems with going from one level to another, when i finish one level and the new one is loaded i want the items, lives, power, etc keeps the account of the old level and i want it to set all over to 0 as is a new level
do i have to scrip the whole game in one script or i have to make separate scrips for each level?

so when the new level start set the variablen from the player and stuff to 0
and i think you shout splitt you script into pices

ok but am not sure how to do that... any example to show me?

Even if you split your script into pieces you can't run a script per level. When you split your script into individual files and add them using #include, the engine merges it into one.

Define your variables like this...

var ammo = 150;
var health = 100;
etc

and then when you load a new level with 'level_load' they will still be the same. If you want to reset them I would write a function to do that and then call that after level_load...

void ResetSettings()
{
ammo = 150;
health = 100;
}