Security error when trying to call ActionScript function from JS

Question

I have a small swf test to test the call to an ActionScript (3.0) function from JavaScript. I use the Flash documentation as a link: ( http://www.adobe.ca/livedocs/flash/9.0/main/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDocs_Parts&file=00000340.html ) When the page loads I get Flash Player error:

SecurityError: Error #2060: Security sandbox violation: ExternalInterface caller file: c:/externalinterface.swf cannot access file: c:\myhtml.html
at flash.external::ExternalInterface$/_initJS()
    at flash.external::ExternalInterface$/addCallback()
    at externalinterface_fla::MainTimeline/frame1()

This is ActionScript:

 import flash.external.ExternalInterface

function callMe(name:String):String{

    return "busy signal";

    }

    ExternalInterface.addCallback("myFunction",callMe);

And JS:

<script type="text/javascript" language="javascript">
    function callSwf() {
        var callResult = flashObject.myFunction("Nick");
        alert(callResult);
    }   

</script>

Finally, the HTML object:

<object width="550" height="400">
<param name="movie" value="externalinterface.swf">
<embed src="externalinterface.swf" width="550" height="400">
</embed>
</object>

How do we get around this?

Answer 1

localhost, , allowcriptaccess = "true", . file://, flash-.