struts explanation add-on problem

i know doesnt work nonetheless i dont know why, also i work?

 <% int outcome = referer.indexof("smlmoverdetail.do"); %>

 <% (result == -1){%> 
 <%out.print("checking");%>
 <bean:define id="joiningdate" name="smlmoverdetailform"
 property="empfdjoiningdate" type="java.lang.string" toscope="session"/>
 <%}%>

please greatfully assistance i dont understand

i have attempted this

<logic:equal name="result"   value = "-1">
<bean:define id="joiningdate" name="smlmoverdetailform"
 property="empfdjoiningdate" type="java.lang.string" toscope="session"/>
</logic:equal> 

but doenst work presumably doesnt exicute bean:define part

help
thansk