Workflows; Script cannot access 'LogCreationDetails' for 'Log' type Items

The Workflow Type Script cannot access the Log Creation Details for 'Log' and 'Outgoing Communication' type Workflow Items.

The following code should return a finLogCreationDetails object but was instead returning Nothing:

Case "BeforeItemAction"
  If workflowItem.ItemIdOriginal = "TEST" Then
    LogCreationDetails = DirectCast(otherParameters.GetObject("LogCreationDetails"), finLogCreationDetails)
  End If

NOTE: Log Creation Details are only available for manually actioned Workflow Items since they are used as a way of transferring the information entered in the User Interface back to the Workflow Item.