Zend certified PHP/Magento developer

Magento2.2.8 – Add custom field for invoice item

Added via migrations to sales_invoice table new column named custom_invoice_sum.

I do not need eav attribute.

Just want to ask: how fill this column when we save invoice.

I think there is not enough $invoice-setData('custom_invoice_sum', $customSum) ?

Thanks for any help!