f:param and commandButton

[Uri Kalish]

When I send a parameter from a commandButton I get a string containing the word “null” from the parameters map. If I use a commandLink instead - it works. Any ideas?     <h:commandButton id="addNewLoadTestReservationButton"       action="">       value="#{msgs.addNewLoadTestReservationButton}"       styleClass="button_action" >             <f:param name="reservation" value="0"/> </h:commandButton> <h:commandLink id="addNewLoadTestReservationLink"       action=""             <h:outputText value="#{msgs.addNewLoadTestReservationButton}"/>             <f:param name="reservation" value="0"/> </h:commandLink>       ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________