changing substring to a variable number

I have thumbnail images called "image1" to "image12" and when you click on these images they take you to the frame label with the larger image in another movie clip. I am hard coding mostly.

It works fine when you click image 1 because it adds 1 everytime but I don't know how to use the substring to convert the frameVar to the thumbnail that has been chosen.


I want to use the number on image4 and change that to my number variable. I am using myString.substring(5,7)); to take out the numbers from image5 when it is clicked but can't convert that to a number to update the frameVar.

I start off with


var frameVar:Number = 1;


mediaData_mc.photosFadeUp_mc.photosData_mc.image1.addEventListener(MouseEvent.CLICK, loadImageLarge);


//////////////////photo gallery section load

function loadImageLarge(event:MouseEvent):void

{

//////////trace button

/////////////goes to the scene of the button clicked

var myString:String = (event.target.name);

mediaData_mc.photosFadeUp_mc.photosData_mc.photoLargeLoad_mc.gotoAndStop(myString);

trace(myString.substring(5,7));

}


////////////////the trace works and I get the number but I don't know how to convert this from text to a number and change my frameVar to the thumbnail selected


////////////////goes to the next frame once in the photoLargeLoad_mc

function loadImageLargeNext(event:MouseEvent):void

{

//////////trace button

trace("go to this "+event.target.name+" "+frameVar+" in the Gallery section");

/////////////goes to image plus the new number

frameVar++;

mediaData_mc.photosFadeUp_mc.photosData_mc.photoLargeLoad_mc.gotoAndStop("image"+frameVar);

}


Thanks for the help! I am obviously new to AS 3.