I am very new to flex and evaluating its possibilities of integration with my existing backend tomcat. I was trying to get a file uploaded using FileReference Upload and it was not working at all. I saw some issues with Mac OS X and browsers with FileReference, so i tried to use a different method of reading the file and passing it as a request parameter to the backend.
I have code where it says fileRef.data, and at this point the mxmlc compiler throws
./fileupload.mxml(31): Error: Access of possibly undefined property data through a reference with static type flash.net:FileReference.
I checked the documentation and found that data can be used for the contents of the file. However I think I am missing something here.