calling my flashvar and assigning it to an xml

i'm trying call flashvar , load in xml.

 

but i'm getting error:

typeerror: error #2007: parameter url must non-null.
    @ flash.net::urlstream/load()
    @ flash.net::urlloader/load()
    @ test_3d_fla::maintimeline/frame1()

 

 

here code on loading flashvar

var xmlfilepath:string = root.loaderinfo.parameters.xmlfile; //i loaded flashvar here..

 

//we save loaded xml variable
var xml:xml;

//load xml file.
var loader = new urlloader();
loader.load(new urlrequest(xmlfilepath));

//we call function xmlloaded() when loading complete.
loader.addeventlistener(event.complete, xmlloaded);

 

 

i know i've embedded flashvars correctly..

 

thank much.

 

here's how embedded in html:

<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=10,0,0,0" width="800" height="600" id="test_3d" align="middle">
    <param name="allowscriptaccess" value="samedomain" />
    <param name="allowfullscreen" value="false" />
    <param name="movie" value="test_3d.swf" />
    <param name="quality" value="high" />
    <param name="bgcolor" value="#ffffff" />
    <param name="flashvars" value="xmlfile=3d-carousel-settings.xml" />    
    <embed src="test_3d.swf" flashvars="xmlfile=3d-carousel-settings.xml" quality="high" bgcolor="#ffffff" width="800" height="600" name="test_3d" align="middle" allowscriptaccess="samedomain" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.adobe.com/go/getflashplayer" />
    </object>

have tried display content of xmlfilepath after assigning root.loaderinfo.parameters.xmlfile it?

the error message indicates, value null. maybe "-" characters in url problem?

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