HiddenField Problem?

Hi,
In my web app. I have a HiddenField as follows:
<asp:HiddenField ID="finalscorehomeG1" runat="server" /> In code behind I am trying to change it as follows: If Not String.IsNullOrEmpty(finalscorehomeG1.Value.ToString) And Not String.IsNullOrWhiteSpace(finalscorehomeG1.Value.ToString) And Not String.IsNullOrEmpty(eventCodeG1.Value.ToString) Then If Convert.ToDouble(odd) > Convert.ToDouble(finalscorehomeG1.Value.ToString) And eventCodeG1.Value = eventID Then finalscorehomeodd.InnerHtml = "<img src='Images/upload-icon.png' style='float:left;'/>" + odd ElseIf Convert.ToDouble(odd) < Convert.ToDouble(finalscorehomeG1.Value.ToString) And eventCodeG1.Value = eventID Then fina ...