$agent->tick('checkboxname', 'value');

##</code><code>##

<table border="0" width="100%" cellspacing="0" cellpadding="0">
<tr><td width="50%">&nbsp; <input type="radio" value="USAGE CREDIT" name="CreditType" checked> Usage Credit</td> </tr>
 </table>

 <table border="0" width="100%" cellspacing="0" cellpadding="0">
<tr><td width="50%">&nbsp; <input type="radio" value="ACCT CREDIT" name="CreditType"> Account Credit</font></td></tr>
 </table>
         
 <table border="0" width="100%" cellspacing="0" cellpadding="0">
 <tr><td width="50%">&nbsp; <input type="radio" value="PAYMENT" name="CreditType" > Payment</td><td width="50%"></td> </tr>
 </table>

<table border="0" width="100%" cellspacing="0" cellpadding="0">
 <tr><td width="50%">&nbsp; <input type="button" value="Submit" name="Frmbutton" ></td> </tr>
 </table>