Data attributes not working as expected

[gunnx]

Hi,
I am trying to use attribute data-autotab-target on a field to jump to another element that is not part of the autotab group but it doesn't seem to work.
In my example I have 6 fields where 2 are randomly enabled, the autotab targets all 6 fields.
Looking at the data on the input with the data attribute it doesn't have the target string I set, instead it has a jQuery object which is empty
Any help would be very welcome?
Thanks