Trying to hide a field

I am trying to hide two checklist fields on Load in a stateless form.

The code I'm using is :

AvailDate = Availability [((Date_field > zoho.currentdate && Number_Available > 0) && Appt_Date_Scroll != "")] sort by Combined_Date_Time ;

appt_test:ui.add(AvailDate.Appt_Date_Scroll.getall());

hide Select_Room_s;

hide Select_Product_s;

When the appt_test field gets the data from the other form, the two checkbox fields appear.

Any Idea's?

Thanks!