Description of problem:
When defining a work item definition that uses 
  org.drools.process.core.datatype.impl.type.EnumDataType
  org.drools.process.core.datatype.impl.type.ListDataType

The web editor for BPMN2 does not contain an editor to be able to assign pre-defined enums or create a new list of defined objects to assign to the parameters defined in the work ite,

Version-Release number of selected component (if applicable):
5.3

How reproducible:

import org.drools.process.core.datatype.impl.type.BooleanDataType;
import org.drools.process.core.datatype.impl.type.EnumDataType;
import org.drools.process.core.datatype.impl.type.ListDataType;
import org.drools.process.core.datatype.impl.type.StringDataType;
[
  [
    "name" : "JBpm5ESBDef7",
    "parameters" : [
      "ServiceCategory" : new StringDataType(),
      "ServiceName" : new StringDataType(),
      "AdvancedMapping" : new ListDataType(StringDataType()),
      "CompleteTask" : new EnumDataType("x.y"), 
      "FromUri" : new StringDataType(),
      "RelatesToUri" : new StringDataType(),
      "ActionUri" : new StringDataType(),
      "ReplyToUri" : new StringDataType(),
      "FaultToUri" : new StringDataType()
    ],
    "displayName" : "JBpm5ESBDef7",
    "icon" : "",
    "eclipse:customEditor" : "org.drools.eclipse.flow.common.editor.editpart.work.SampleCustomEditor",
    "category" : "ESB Integration",
    "defaultHandler" : "org.rogueware.jboss.middleware.brms.domain.services.soa.esb.tasks.EsbInvokeServiceWorkItem"
  ]
]

Try assign AdvancedMapping and CompleteTask in web editor.


Expected results:
Editor supposed to present drop down of enum values
Editor supposed to allow multi-valies (list)

Additional info:
These items are also not found in the documentation anywhere.
Make its difficult to work with.