[F8] Help needed with actionscript numbers

im working on a project for a website, i’m currently having a lot of trouble when i try to add two numbers together.

onClipEvent (enterFrame) {
_root.print_loop++;
if (_root.print_loop == 10) {
_root.print_loop = 0;

_root.level_chance = 6

_root.number = Math.floor(Math.random()*(_root.level_chance-1))+1;

if (_root.number == 1) {
_root.number2 = Math.floor(Math.random()*(5-1))+1;
Number(_root.numberstore) += Number(_root.number2)

if (_root.numberstore>=5) {
_root.nextFrame();
_root.numberstore -5;
}
}
}
}

it all works fine apart from this line here where its adding the old “numberstore” in with “number2” to create the new “numberstore”. I’ve tried all different combinations to get this to work, but all i keep getting is e.g. 1+1 = 11 not 1+1=2.

Number(_root.numberstore) += Number(_root.number2)

any help on this would be greatly apreicated.