[{
"field_label": "Component",
"field_type": "packtag",
"field_type_ui": "dropdown",
"field_dbname": "component",
"field_sqlwhere": "packtag_l1 = 3 and packtag_l2 = 1 and packtag_l4 = 0",
	"field_sub": 
			{
				"field_label": "Sub Component",
				"field_type": "packtag",
				"field_type_ui": "multi-checkbox",
				"field_sqlwhere": "packtag_l1 = 3 and packtag_l2 = 1 and packtag_l3 = selected_parent_field"
			}
},
{
"field_label": "Shape",
"field_type": "packtag",
"field_type_ui": "dropdown",
"field_dbname": "shape",
"field_sqlwhere": "packtag_l1 = 3 and packtag_l2 = 1 and packtag_l4 = 0"
}]