multiple radio buttons but only one won't fire onCheckedChange asp.net

Question

I have a set of 3 radio buttons, but the first button doesn't fire the onCheckedChange event when you click on it. I put a breakpoint in my c# code at the SSTypeChanged function so I know it's not being called when you click on the Pullback button. Can anyone tell me what I'm missing? Thanks in advance.

<asp:RadioButton ID="rbn_SSPullback" runat="server" 
                 Text="Pullback" CssClass="msRadioButton" 
                 Font-Size="12" GroupName="MSType" 
                 OnCheckedChange="SSTypeChanged" AutoPostBack="true" />
<br />
<asp:RadioButton ID="rbn_SSDeadlength" runat="server" 
                 Text="Deadlength" CssClass="msRadioButton" 
                 Font-Size="12" GroupName="MSType"
                 OnCheckedChanged="SSTypeChanged" AutoPostBack="true" />
<br />
<asp:RadioButton ID="rbn_SSModular" runat="server" 
                 Text="Modular (Bar Feed Only)" CssClass="msRadioButton" 
                 Font-Size="12" GroupName="MSType" 
                 OnCheckedChanged="SSTypeChanged" AutoPostBack="true" />

Answer 1

OnCheckedChange="SS should be OnCheckedChanged="SS

You have a syntax error on the first one.