Dynamic Mc

I am using flash vars to pass variables into my swf file.

but i want to refetence a Mc by using a flash var.

MY HTML LOOKS LIKE

<script type="text/javascript"> AC_FL_RunContent( 'codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0' ,'width','230' ,'height','460' ,'src','Flash/navBar' ,'quality','high' , 'FlashVars', 'gotoPage=Frame&myLink=Mc' ,'pluginspage','http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash' ,'movie','Flash/navBar' ); //end AC code </script>

My FLASH LOOKS LIKE

onClipEvent(Load){
_root.myLink._x=100;
}

but nothing happends.

how Can i call a Mc from the flash vars and have it do something

Thanks