Pass URL string from external file to AS variable (dynamic file names)

I have a movie player that works fine when i hard-code the url value in the video function, but when i try to pass that url/file path from an external file, the video doesn’t load. I suspect that there is something i’m doing wrong with the quotes. What am i doing wrong?

var vfile:String = string("path");

supervideo = function () {
	var netConn:NetConnection = new NetConnection();
	netConn.connect(null);
	var netStream:NetStream = new NetStream (netConn);
	video.attachVideo(netStream);
	netStream.setBufferTime(10);
	netStream.play(vfile);
	
};

loadText.load(_global.text_url1);
loadText.onLoad = function(success) {
    if(success){	
		showtitle.text = this.title1;
		vfile = this.flv_name;
		supervideo();
		}
	}

The value in the php file looks like this:

&flv_name="elements/flv/superape.flv"&

So ultimately i want to end up with

netStream.play("elements/flv/superape.flv");

. I know the value of

vfile

is being passed from the php file and getting into the

supervideo();

function because i have a textbox echoing

vfile

. I have tried defining the variable with and without the “:String”. Please let me know if you can see any errors. Thanks!