TabContainer Server Side Event within Master Pages

I want to fire a server side event on the tab change event and I am sure it is not working beacuse of the use of a master page. Any thoughts how to get this working proerly?

1public void TabContainerPublications_ActiveTabChanged(object sender, EventArgs e)2{3string strTest;4if (TabContainerPublications.ActiveTabIndex == 0)5 strTest ="Made It!";6}

In the web form is the following:

1<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">2 <asp:ScriptManager ID="PublicationsScriptManager" runat="server">3 </asp:ScriptManager>4 <div id="publicationsheaderimage">5 </div>6 <div id="fullCol">7 <h2>8 Publications</h2>9 <ajaxToolkit:TabContainer ID="TabContainerPublications" runat="server" OnActiveTabChanged="TabContainerPublications_ActiveTabChanged">10 <ajaxToolkit:TabPanel ID="TabPanelAllPublications" HeaderText="All Publications" runat="server">11 <ContentTemplate>12 <asp:GridView runat="server" ID="GridViewAllPublications" AutoGenerateColumns="False"13 ShowHeader="False" CellSpacing="5" GridLines="None">14 <Columns>15 <asp:TemplateField>16 <ItemTemplate>17 <asp:HyperLink ID="HyperLink1" NavigateUrl='<%# Bind("articleUrl")%>' runat="server">18 <asp:Label ID="Label1" runat="server" Text='<%# Bind("articleName")%>'></asp:Label></asp:HyperLink>19 <asp:Label ID="Label2" runat="server" Text='<%# Bind("Abstract")%>'></asp:Label>20 </ItemTemplate>21 </asp:TemplateField>22 </Columns>23 </asp:GridView>24 </ContentTemplate>25 </ajaxToolkit:TabPanel>

As it turns out this was not my real issue. Since I wanted to execute a server side event I had to wrap the Tabs in an Update Panel.