Sending VALUES of CF variables thru FlashVars

Hey There!

I am testing a simple application where I am trying to send back to flash (AS3) some variable values from coldfusion. It works just fine when I assign the value in CF "by hands" i.e.

<cfsetting enablecfoutputonly="YES">
<cfset Return = "&Numbers=456&">
<cfprocessingdirective suppresswhitespace="Yes">
<cfoutput>
#Return #
</cfoutput>
</cfprocessingdirective>

Then flash accepts the value of variable Numbers of 456.

Now I ran into a problem, when I need instead of steady 456 pass the VALUE of CF variable. I was trying the following way:

<cfsetting enablecfoutputonly="YES">
<cfset x = 123>
<cfset Return = "&Balls=&">
<cfprocessingdirective suppresswhitespace="Yes">
<cfoutput>
#Return#=#x#
</cfoutput>
</cfprocessingdirective>

In this case I receive no value in flash assigned to Balls ;(

Can anyone please let me know that is the proper way to pass VALUES of CF variables using flashvars?
Or maybe you know where to find a tutorial showing how that was done.

Thank you