[jbpm-issues] [JBoss JIRA] Updated: (JBPM-2506) document how to enable variable history

document how to enable variable history --------------------------------------- Key: JBPM-2506 URL: https://jira.jboss.org/jira/browse/JBPM-2506 Project: jBPM Issue Type: Feature Request Security Level: Public(Everyone can see) Components: Runtime Engine Affects Versions: jBPM 4.0 Reporter: Hauke Rabe Assignee: Tom Baeyens Priority: Optional Fix For: jBPM 4.2 Original Estimate: 4 hours Remaining Estimate: 4 hours ScopeInstanceImpl#createVariableObject has the ability to enable history. But there is only a setVariable method wich disables the history. So, add the history flag to user interfaces.