java - Activiti: How to save the user who has suspended an Activiti process instance on Activiti DB -

i working activiti api and, in project, have panel allows users suspend process instance. in order make suspension, following steps listed here, save somehow logged user has suspended process, possible?

i have string user in code, don't know how save on activiti data base user has suspended process instance.

thanks in advance!

in ui using call "suspend", should call api create process variable userid call suspend.

the api create process variable here: http://www.activiti.org/userguide/#_create_or_update_variables_on_a_process_instance