attachserial input field for ean

-- HikaShop version -- : 2.4.0
-- HikaSerial version -- : 1.9.1
-- Joomla version -- : 2.5.28
-- PHP version -- : 5.5.17

Hi

1) I test attachserial and when create ticket ; there is 2 input form when create ean area in the image raster ticket . Can i know howto to use them ?

2) i enable 2 plugin attachserial ean and HikaSerial . Do i need to enable another one explicitly for consume serial like "Product-add consumer" ?
when i edit this last plug in i have
Fatal error: Call to undefined method hikashopProductClass::getTreeList() in administrator/components/com_hikashop/types/productdisplay.php on line 130
Is it logic ?

3) move bug to bug chapter

Regard's

1)
i search in the hikaserial documentation and i find
1a "Format - The output format (raw text, a formatted date, a qrcode or a barcode). Some format can have extra parameters. " but no information about parameters ( empty input field 1 and 2 higlight in green in my capture screenn)
1b "Barcode - Display the content as a Barcode (format EAN13), the content as to be compatible with this format.. " But nothing about the 2 empty fields
2)

3) discover this when use hikaserial to see after buy a product and see if change in order BE. I put it to bug section

In most of the case like programming implicit can be understand if you have the knowledge/skill on the subject i don't have ....
It is like the word "namekey" i can read many occurrence in the documentation that i don't understand ....
thank's a lot