public void CallAddRoutine()
    {
        string subject_code, block_string, block_id, class_string, start_string, day_string, end_string;
        int    index = 0;

        subject_code = sub_code.GetParsedText().Trim();
        class_string = class_name.GetParsedText().Trim();
        start_string = start_time.GetParsedText().Trim();
        end_string   = end_time.GetParsedText().Trim();
        day_string   = day.GetParsedText().Trim();
        block_string = "Test";
        block_id     = "test";
        if (subject_code.Length == 0 || class_string.Length == 0 || start_string.Length == 0 || end_string.Length == 0 || day_string.Length == 0)
        {
            error.text = "The input field may be empty.";
        }
        else
        {
            //FOR BLOCK
            int temp = Convert.ToInt32(block.GetParsedText().Trim());
            if (temp <= 14 && temp > 0)
            {
                if (temp < 10)
                {
                    block_string = "Block " + temp;
                    block_id     = "blk0" + temp;
                }
                else
                {
                    block_string = "Block " + temp;
                    block_id     = "blk" + temp;
                }
                index++;
            }
            //FOR Subject Code
            for (int i = 0; i < subjects.Count; i++)
            {
                if (subject_code.Trim() == subjects[i].ToString().Trim())
                {
                    index++;
                    subject_code = subject_code.Trim();
                    break;
                }
            }
            //DAY
            int day_id = GetDayId(day_string.ToUpper());
            //FOR duplicate routines

            if (index == 2)
            {
                //subject and block name passed
                if (day_id != 0)
                {
                    int checkRoutine = db.CheckRoutine(day_id, block_string, class_string, start_string, end_string);
                    if (checkRoutine == 1)
                    {
                        Debug.Log("All correct No class in that time");
                        db.AddRoutine(class_string, day_id, subject_code, block_string, block_id, start_string, end_string);
                    }
                    else
                    {
                        Debug.Log("Classes in that time");
                        error.text = "Class " + class_string + " of " + block_string + "is not empty at that time";
                    }
                }
                else
                {
                    error.text = "The day input is incorrect";
                }
            }
            else
            {
                error.text = "Either the Subject doesnt exist or the block";
            }
        }
    }