Good Day ALL

I have a UserControl that has a Dropdownlist. In the Hosting Page i have a Ultrawebgrid that gets updated based on the Selecteindexchange event the the dropdown. I have have another Control on the Left hand side that needs to be Updated on Selecteindexchange of the Drop down. Now the Left hand side Control Works and it gets updated but the Grid does not  get updated. I have attached a link to photo of my design



Here is a Definition of my Grid

   <igtbl:UltraWebGrid ID="Gridstaff" runat="server" Height="158px" StyleSetName="RubberBlack"
                                                            Width="400px">
                                                            <Bands>
                                                                <igtbl:UltraGridBand>
                                                                    <AddNewRow View="NotSet" Visible="NotSet">
                                                                    </AddNewRow>
                                                                </igtbl:UltraGridBand>
                                                            </Bands>
                                                            <DisplayLayout BorderCollapseDefault="Separate" LoadOnDemand="Automatic" Name="ctl02xUltraWebGrid1"
                                                                RowHeightDefault="20px" SelectTypeRowDefault="Extended" Version="4.00">
                                                                <FrameStyle Height="158px" Width="400px">
                                                                </FrameStyle>
                                                                <ActivationObject BorderColor="" BorderWidth="">
                                                                </ActivationObject>
                                                            </DisplayLayout>
                                                        </igtbl:UltraWebGrid>