Form data not showing in DB. "NULL"

I have a multi-checkbox in my form. It has 8 choices and I want people to be able to choose multiple boxes.
I want the data stored in the database so I can see it.

What I see in the database now is:
input_checkbox_group_32
NULL

None of their choices are being stored in the database. Am I using the wrong kind of box? What I'm I doing wrong?😑

J 1.7.3
CF 4.0 RC2.0

Hi login418,

Please drag a Handle Arrays action into the OnSubmit event and move it up before the Email action.

Bob

Awesome! Thanks.