Fill lot numbers as work order components through script

Hi,

We are trying to update components in work orders with available lot numbers.

When a single lot number covers the full required quantity it works fine by giving the lot number without the quantity

recWO.setCurrentSublistValue({sublistId: 'item', fieldId: 'serialnumbers', value: [''LN1''] });

But when we have to use multiple lot numbers, with a quantity per lot number, we have an error trying following syntax

recWO.setCurrentSublistValue({sublistId: 'item', fieldId: 'serialnumbers', value: [''LN1(5)'',''LN2(2)"] });

How should we fill such a table with several lot numbers and a quantity per lot number ?

Thanks,