Bug 188829 Move the item ,the trans of the model don't close.
1:New report design. 2:Add a Embedded image. 3:Add another imge , then drag the second imge to the first position. 4:Change the size of the first image. Expected: Image change the size. Now: Image size don't change.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/ContentElementCommand.java
getTransOption( ) );
		
		DesignElement tmpElement = copyTopCompositeValue( );
		List list = ref.getList( module, tmpElement );
		PropertyDefn propDefn = ref.getPropDefn( );
		if ( ref.getMemberDefn( ) != null )
			propDefn = ref.getMemberDefn( );
		Object value = list.get( ref.getIndex( ) );
		PropertyListRecord record = new PropertyListRecord( tmpElement, ref,
				list );
		stack.execute( record );
		record.setEventTarget( eventTarget );
		if ( value instanceof ElementRefValue )
		{
			ElementRefValue refValue = (ElementRefValue) value;
			if ( refValue.isResolved( ) )
			{
				ElementRefRecord refRecord = new ElementRefRecord( element,
						refValue.getTargetElement( ), propDefn.getName( ),
						false );
				stack.execute( refRecord );
			}
		}
		stack.commit( );
	}
	/**
	 * Returns the transaction option for the transaction in this command. ONLY
	 * ONE property event should be sent out.
	 * 
	 * @return