ajax in master page

[Proogeren]

Hello

I have a problem
I am using ajax and I have a aspx page that belongs to a master page.
I am using the update panel on the aspx page and want to acheive the following

When the user clicks a ButtonLink in the aspx page I want it to trigger the button OnClick on the
master page.

I have tried the following;

/*This is in the aspx page*/
<atlas:UpdatePanel ID="UpdatePanel" runat="server">
<ContentTemplate>
//code
//code
</ContentTemplate>
        <Triggers>
            <atlas:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />
        </Triggers>
</atlas:UpdatePanel>
 

Button1 is in the master page!

But nothing happends.. Have I missed out on something?