But I am not sure if that is what you are looking for since you mentioned combo. Can you be more specific if that is not what you are wanting?
what i want is, i have 2 combo referring to one store which contains 4 values (day,week,month,period). but for first combo i want 'day' not to be displayed.
1st combo-week,month,period
2nd combo-day,week,month,period