Interating through a Map [ which has DTO in the values ] using l ogic:iterate

[Sachin Bhutada]

hi, 
   I have a HashMap which has Key and Value both as DTOs 

        Key contains Dept DTO (Dept has Dept No, Dept Name)
        Value contains Collection of EmpDetails DTO (It has Name, Email-Id,
etc information)
   In the jsp page I want to iterate through this Map using logic iterate
tag so that outpage html page should look like this..

  Dept No : Dept Name
        Emp One         [EMAIL PROTECTED]               .....
        Emp Two         [EMAIL PROTECTED]               .....
        and so on 
  Dept No 3 : Dept Name 3       
        Emp One         [EMAIL PROTECTED]               .....
        Emp Two         [EMAIL PROTECTED]               .....
        and so on ...........

 To achieve this, I have written following code. For the time being I am
just concetrating on displaying the Department Details.. 

 <logic:iterate id="element"  name="formName" property="deptHashMap">
          <br/>
          <bean:write name="element" property="key"/> -- IT displayes the
Dept object name 

        When I try to use following code it shows error message 
        javax.servlet.jsp.JspException: No getter method for property
key.deptNo of bean element 
          <bean:write name="element" property="key.deptNo"/>
 </logic:iterate>

In my actionform class I have haspmap and getter and setter methods. 

How should I display deptNo and deptName in the Dept DTO ? 

Thanks in Advance
Sachin