Multi-select checkbox

[Access_Novice]

I was under the impression that the purpose of check boxes was to allow for multiple selections within a group. I have an options group which 15 check boxes, 3 rows and 5 values in each row. The 15 check boxes are labeled with various types of allergies. Since a person can have more than one allergy, I should allow for multiple selections.

1. I cannot select more than one checkbox inside of this option group (these were all created in the same option group control that I added to my form).
2. After I check a box, I cannot uncheck it.

I don't want to use a listbox. I like the layout that I have. I can't find a property that seems to allow for multiple selections.



I forgot to mention, each checkbox value is in its own field, therefore 15 checkboxes and 15 fields.

[June7]

Checkboxes and radio buttons within an option group are not bound to fields. The option group control is bound to field therefore there can be only one selection within the group.

Multiple checkboxes indicates a non-normalized data structure and will give you a lot of trouble when you want to search records with multiple criteria.