Load additional fields data of a ticket

[Komanc]

Hi,

I have my own plugin for exporingt data of a ticket into customized Excel file. I had to add an additional field into a Ticket form (I can see it there, edit it... everything is ok). But when I load ticket data in my plugin via Ticket::getById() there is no field property with additional field.

How can I read additional fields data?

Thanks.