wso2esb - How to read request parameter values in wso2 esb script mediator -

i need catch url parameters parsing in request script mediator. uses wso2 esb 4.8.1. , tried following js code. gives error saying window not defined.

function geturlvars() {  var vars = {};  var parts = window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m,key,value) {  vars[key] = value;  });  return vars;  }    	    		var requestnew="<m:viw xmlns:m=\"wom\">                                                                                                     			<m:request>  			<requestheader>                 <remoteip>dummyip</remoteip>                 <appname>dummyappname</appname>                 <apppassword>dummypassword</apppassword>                 <username>dummyusername</username>              </requestheader>              <orderid>23</orderid>              <accountno>23</accountno>              <cir>23</cir>              <docketno>23</docketno>              <status>23</status>              <requesttype>23</requesttype>              <requestedfrom>2016-04-19t22:47:37.000z</requestedfrom>";  			requestnew=requestnew+"              <requestedto>"+geturlvars()['requestedto']+"</requestedto>           </m:request>                                                                             </m:viw>";  	    	    	  mc.setpayloadxml(new xml(requestnew));

so how can access url parameter values in wso2 esb script mediator?

following blog tell how it. written targetting wso2 api cloud. since synapse used in both esb , api manager, valid question well. in summary,

to retrieve path parameters

var id = mc.getproperty('uri.var.id'); 

to retrieve query parameters

var mask = mc.getproperty('query.param.mask');