I had tried the Rest task. But It was different that actual work from what is the manual said.
Doses it seem "in milli seconds" instead of "in seconds" at ConnectTimeout and ReadTimeout in the source.

https://github.com/kiegroup/jbpm/blob/35190095af784560f6367fc65427869835fcd563/jbpm-workitems/jbpm-workitems-rest/src/main/java/org/jbpm/process/workitem/rest/RESTWorkItemHandler.java#L781-L788

Reported by: tkamata

https://access.redhat.com/documentation/en-us/red_hat_process_automation_manager/7.9/html/developing_process_services_in_red_hat_process_automation_manager/bpmn-con_business-processes#annotations:b0ae0ba7-99da-4c70-952e-25c2ff75a938