If else android

1)

<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"
"http://www.WAPforum.org/DTD/wml_1.1.xml">
<wml>

<card id="card1">
   <p>
   if else example
   </p>
   <do type="accept">
      <go href="IfElseExample.wmls#findifelse()" />
   </do>
</card>

<card id="card2">
<p>
   rand is $(str)
</p>
</card>

</wml>

2)
extern function findifelse()
{
   var str;
   var rand = Lang.random(10000);
   if(rand < 5000)
   {
      str = "less than 5000";
   }
   else
   {
      str = "NOT less than 5000";
   }
   WMLBrowser.setVar("str", str);
   WMLBrowser.go("IfElseExample.wml#card2");
};