how to embed pdf file in flash based android application

Im trying to create android and iPad application using the flash CS 5. Facing some problem to open the PDF file using some button inside my application.

I have PDF file and I want, when I press some button then PDF file will open. I'm using this code

myPDF.addEventListener(MouseEvent.CLICK, ldr);

    function ldr(event:MouseEvent):void {       navigateToURL(new URLRequest("Dimensions.pdf"), "_blank"); }

this code is working properly in the computer but in android tablet I got this error message **“ERROR, the ducoment path is not valid”**

Note: (my flash file (application file) and PDF file is in the same folder in my computer)

Please suggest me how I can open the PDF file using the button inside of my application.