Solman WebUI - Action -> Update Field

Hi experts,

we are using IT-Servicemanagement of Solman 7.1, on WebUi.

I did create an action, which is executed after doing a change in a ticket.

In this action I update the categories of the ticket with FM "CRM_ORDER_MAINTAIN", which works.

But, at the UI you need to press at least one ENTER to get the new categories into the field.

So, how can I force an update of the UI?

Kind regards