1. In Data types tab, click new Data Type .
2. name the Type to 'bbb'
3. Then I don't know how to create a child field for this 'bbb' , when I click + button, it only and field in the same level as bbb
1. In Data types tab, click new Data Type .
2. name the Type to 'bbb'
3. Then I don't know how to create a child field for this 'bbb' , when I click + button, it only and field in the same level as bbb