C Sharp :: If Checkboxlist Is Not Selected Show Save As Number 0 In DB

I'm working in a web aplication in c#, vs 2008, framework 3.5, I need to assign a value to a var, in this case "problemas", when I tried to save the value that I have in the checkboxlist, it does, but if don't selected, can't show 0, besides if I change the value "problemas = 9" to problemas = 111111" doesn't works.

protected void ckblProblemas_SelectedIndexChanged(object sender, EventArgs e){
int problemas = 0; {
if (ckblProblemas.SelectedValue.Equals("9")) {
                    problemas = 9;
                } else {
                    problemas.Equals("0");
                }