Actionscript 3 Random Password generator

Hi,

Here is a random password generator

function createPassword(length:Number=10):String
{
    var chars:String="abchefghjkmnpqrstuvwxyzQWERTYUIOPLKJHGFDSAZXCVBNM0123456789";
    var i:Number=0;
    var pass:String="";
    var nLenght:Number=chars.length;
    while(i<=length)
    {
        var num:Number=Math.round(Math.random()*nLenght);
        pass+=chars.charAt(num);
        i++;
    }
    return pass;
}