AS2 - array loop to change variables?

[sg123]

The plan is to set up variables to react to a flashvars value like this:

<param name="flashvars" value="mainVars=1" />

var videoArray:Array;
var videoTitle:String;
var videoFile:String;

videoArray=[0,1];

function onEnterFrame(){
	for(var i=videoArray.length-1;i>0;i++){
		while(i==_root.mainVar-1){
			if(i==0){
				videoTitle="Show the video's change";
				videoFile="VID";
			}
			else if(i==1){
				videoTitle="This is the second one";
				videoFile="promo";
			}
		}
	}
}

There would be many mainVars (over 100, actually) and this setup isn't working. Could someone please help fix this problem?