ActionMessages not displaying

[Kranti]

I am trying to get the action messages from action class as follows but not
getting the message but record is inserted properly

*in action class*

if(isInserted==true){
ActionMessages addTaskMessages = new ActionMessages();
addTaskMessages.add("addtasksuccess", new ActionMessage("
message.addtask.sucess"));
saveMessages(httpservletrequest, addTaskMessages);
}

*in jsp*

<logic:messagesPresent message="true" property="addTaskMessages">
<html:messages property="addTaskMessages" message="true"
id="addtasksuccess">
  <bean:write name="addtasksuccess"/><br/>
 </html:messages>
</logic:messagesPresent>