Add input data check for Gl Setup

if (!check_num('past_due_days', 0, 100))
    {
        display_error(_("The past due days interval allowance must be between 0 and 100."));
        set_focus('past_due_days');
        return false;
    }

    if (!check_num('default_quote_valid_days', 0))
    {
        display_error(_("Quote Valid Days is not valid number."));
        set_focus('default_quote_valid_days');
        return false;
    }

    if (!check_num('default_delivery_required', 0))
    {
        display_error(_("Delivery Required By is not valid number."));
        set_focus('default_delivery_required');
        return false;
    }

    if (!check_num('default_receival_required', 0))
    {
        display_error(_("Receival Required By is not valid number."));
        set_focus('default_receival_required');
        return false;
    }

    if (!check_num('default_workorder_required', 0))
    {
        display_error(_("Work Order Required By After is not valid number."));
        set_focus('default_workorder_required');
        return false;
    }