To read the value of a FlashVar(s) use the following in your creationComplete handler.

_myNumber = Application.application.parameters.myNumber;

And the Javascript snippet would look like this if you using the default AC_FL_RunContent method.

"FlashVars", "myNumber=123",

Or for multiple variables:

"FlashVars", "myNumber=124&myString=polyGeek",

And if you’re using SWFObject then the Javascript would look something like this:


<script type="text/javascript">
var flashvars = {
myNumber: "123.456",
myString: "polyGeek" };

swfobject.embedSWF( '${application}.swf',
'${application}_div',
'${width}', '${height}',
'9.0.45',
'expressinstall.swf',
flashvars,
{bgcolor: '#ffffff', menu: 'false'}, {id: '${application}'});
</script>

More info about SWFObject at GoogleCode.