Marco Baroetto [http://community.jboss.org/people/H4rLoCk] replied to the discussion "Custom BusinessCalendar" To view the discussion, visit: http://community.jboss.org/message/559563#559563 -------------------------------------------------------------- I think the jBPM Develpers Guide is not correct in 2.1.2 Business Calendar: For example: public class CustomBusinessCalendar implements BusinessCalendar {     public Date add(Date date, String duration) {     if ("my next birthday".equals(duration)) {       GregorianCalendar gregorianCalendar = new GregorianCalendar();       gregorianCalendar.set(Calendar.MONTH, Calendar.JULY);       gregorianCalendar.set(Calendar.DAY_OF_MONTH, 21);       return gregorianCalendar.getTime();     }     return null;   } }     To configure the jBPM engine to use this custom business calendar, just add      the following line to your jbpm.cfg.xml: <process-engine-context>     <object  class="org.jbpm.test.custombusinesscalendarimpl.CustomBusinessCalendar" /> </process-engine-context>   Take a look at the       org.jbpm.test.custombusinesscalendarimpl.CustomBusinessCalendarImplTest for more information. 1) org.jbpm.test.custombusinesscalendarimpl.CustomBusinessCalendarImplTest doesn't exist 2) To add your EL expression in timers (at least for task's duedate) you have to: - Write my.own.MyNextBirthday extends Date (or Calendar,GregorianCalendar...) and is equals to the date you want. - Add to your cfg the following: <object name="myNextBirthday" class="my.own.MyNextBirthday" /> 3) Write your jpdl as follows: <task name="TaskTransaction2_step1"  duedate="#{myNextBirthday} +3 days" candidate-groups="user"> -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/559563#559563] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]