So i did figure out a solution that took no changing, just adding a double loop!
for each(var boks:Array in poengInputBokser){
for (var i:int = 0; i < 3; i++){
boks[teller].restrict = "0-9";
}
}
where the "boks" variable is each new array in my first array, then I just added a new loop inside, that goes into each textField in my array!