DropDownList problem with ATLAS

Excuse-me for my poor english.

This is my code:

<

atlas:ScriptManagerID="smImmobili"runat="server"EnablePartialRendering="true"/>

<

atlas:UpdatePanelID="upProvinciaZona"runat="server"EnableViewState="True"RenderMode="Inline">

<ContentTemplate>

<tableborder="0"cellpadding="0"cellspacing="4"style="width: 98%"><tr><tdstyle="width: 109px"><strong>

Regione

</strong></td><tdcolspan="3"><asp:DropDownListID="cmbRegioni"runat="server"Width="190px"AutoPostBack="True"OnSelectedIndexChanged="cmbRegioni_SelectedIndexChanged"CssClass="Testo"></asp:DropDownList></td>

</tr><tr><tdstyle="width: 109px; height: 19px;"><strong>

Provincia

</strong></td><tdcolspan="3"style="height: 19px"><asp:DropDownListID="cmbProvince"runat="server"Width="190px"AutoPostBack="True"OnSelectedIndexChanged="cmbProvince_SelectedIndexChanged"EnableTheming="True"CssClass="Testo"></asp:DropDownList><strong></strong></td></tr>

<%

if(_ViewZone){ %><tr><tdstyle="width: 109px; height: 19px"><strong>Zona</strong></td><tdcolspan="3"style="height: 19px"><asp:DropDownListID="cmbZone"runat="server"Width="190px"CssClass="Testo"></asp:DropDownList></td></tr>

<%} %>

<trbgcolor="#044da4"><tdcolspan="4"style="height: 15px"></td></tr></table></ContentTemplate></atlas:UpdatePanel>

This is a "CascadingDropDownList Style" page, obiouvsly not from Atlas Toolkit.

On SelectedIndexChange Event on first dropdown I execute server side code to Fill the second drop down:

protected

void cmbRegioni_SelectedIndexChanged(object sender,EventArgs e)

{

FillComboProvince(

int.Parse(cmbRegioni.SelectedValue));

_ViewZone =

clsProvince.getProvince(cmbProvince.SelectedValue).ViewZone;

}

FillComboProvince is a Method that fill my combo with some cities.

ex... cmbProvince.Items.add(...)...

With EnablePartialRendering="true" don't work! WHY?

Is it a bug?

hello.

can you give us more details about what's wrong? btw, if you can build a small page that reprocudes the problem and post it here, you'll have more options of getting an answer...