check if a file exists in a folder actionScript 3

Question

I would like to check if the file exists and if not display noimage.gif. The below is returning false in the console, can you help?

 ...
[Bindable]
private var imageName:String;   
imageName  = "pca" + this._product.productID + ".jpg";

var fileName:File = new File() 
fileName.nativePath = "C:/STSMultimediaSync/market/pictures/{imageName}"; 
trace(fileName.exists);
....

PS - I know the file exists as when I hard code the image name, the value changes to true.

Answer 1

I don't think you can do {} inside AS3 (It can be done in mxml). Try :

fileName.nativePath = "C:/STSMultimediaSync/market/pictures/"+imageName;