how to handle return type in .as file

Hi i am executing one java method from mxml .. but i am not able to handle it's

return type. How to handle it?
 Can anybody help me on this??

 may sample code looks like:
 /*
 req1 = new XMLHttpRequest();
 req1 = new ActiveXObject("Microsoft.XMLHTTP");
 req1.open("GET", log.login(userId.text,password.text), true);
 v = req1.responseText;
 alert("RES : "+v);
 */
 var ret = log.login(userId.text,password.text);
 alert(ret);
 if(ret == 1){
 return "screen.mxml";
 }else{
 alert("Login failure");
 return "index.mxml";
 }

 log.login(userId.text,password.text); isthe java method which returns int 
type. based on result i have to porcess on this page

 Thanks 
 Satish KC