how to get the object from the window.open in window.opener

Question

hi i am not able to get the object which i am passing through window.open

 

 

sret = window.open(urlaspx, obj, 'center:yes; dialogWidth:400px; dialogHeight:430px; help:0; status:0; scroll:0; resizable:1'); 

 

 

in my urlaspx 

 

<script type="text/javascript">

var obj= window.opener;

var name= obj.name;

var age= obj.age;

</script>

 

 

pls help me on this