Updating A Column In SQL

I am trying to update a users status from Pending to either Approved or Rejected.  I created the following handers to update me db by I keep getting a syntax error. What am I doing wrong?
 
public partial class admin_beta : System.Web.UI.Page
{

    protected void ApproveButton_Click(object sender, EventArgs e)
    {
        SqlConnection conn = new SqlConnection("Data Source=TECATE;Initial Catalog=subscribe_mainSQL; User Id=maindb Password=$$ricardo; Integrated Security=SSPI");
        SqlCommand cmd = new SqlCommand("UPDATE [main] ([status]) VALUES (@status)", conn);

        conn.Open();
        cmd.Parameters.AddWithValue("@status", "Approved");
        int i = cmd.ExecuteNonQuery();
        conn.Dispose();
    }
    protected void DenyButton_Click(object sender, EventArgs e)
    {
        SqlConnection conn = new SqlConnection("Data Source=TECATE;Initial Catalog=subscribe_mainSQL; User Id=maindb Password=$$ricardo; Integrated Security=SSPI");
        SqlCommand cmd = new SqlCommand("UPDATE [main] ([status]) VALUES (@status)", conn);

        conn.Open();
        cmd.Parameters.AddWithValue("@status", "Rejected");
        int i = cmd.ExecuteNonQuery();
        conn.Dispose();
    }


}