Try this:
$fieldname = get_sub_field_object('col_left');
$value = $fieldname['_name']; ?>
<div class="<?php echo $value; ?>">Blablabla</div>
This should give you
<div class="col_left">Blablabla</div>
Same here. Tried deactivating license and re-entering it, to no avail.
Ah, of course! A negative value would be the easier route for the situation I described.
Also it occurred to me that when creating field groups, if I initially number them with values like 10, 20, 30, etc, then I can more easily insert additional field groups in desired order w/o having to re-number all the rest.
After I posted this I happened to discover the description field for field groups – never saw that before! So I could use that to indicate the order number as well as the location of the field group (if it’s not evident by the title) so I can quickly scan through the list of groups and get that kind of info without having to click on ‘edit’.
Anyway thanks James, for your quick reply and suggestion. Cheers!