Waring message instead of Error Message for UWL FunctionModuleActionHandler

[mlymly]

Hi Experts,
I followed UWL help (URL: http://help.sap.com/saphelp_nw70ehp1/helpdata/en/d6/7bd981916f4c4aabd5231723efa8e8/frameset.htm) to configure FunctionModuleActionHandler, below is my XML configuration:
{code}<Action name="approve" groupAction="yes" handler="FunctionModuleActionHandler" returnToDetailViewAllowed="yes" launchInNewWindow="no">
          <Properties>
            <Property name="WI_ID" value="${item.externalId}"/>
            <Property name="FunctionModule" value="ZDARCY_BT"/>
          </Properties>
          <Descriptions default="Approve"/>
 </Action>{code}
In function ZDARCY_BT I set RETURN_CODE =1 and fill the MESSAGE_LINES table with MSG_TYPE = 'E' record. But on UWL screen the message was warning message. Did I make a wrong configure or my function return data is incorrect? Many thanks!

 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.mit.edu/pipermail/sap-wug/attachments/20110808/17077651/attachment.htm