I have a drop down list that is bound using an HTTP data service from a database (set up through the

I have a drop down list that is bound using an HTTP data service from a database (set up through the wizard, not as a declaration). but when i try to retrieve data using dataprovider ,the output shows [object object] in  the drop down list .please any help will be appreciated flex 4.5 for spark

<s:DropDownList id="ddlProducts" width="400" labelField="Title"> 

        <s:dataProvider> 

            <s:AsyncListView list="{userRequest.lastResult.users.user}"/> 

        </s:dataProvider> 

    </s:DropDownList>

<s:DropDownList id="ddlProducts" width="400" dataProvider="{userRequest.lastResult.users.user}"> 

    </s:DropDownList>

the output for the mobile simulator displays

[object object]

[object object]

plz help!!!