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
DesignElement topElement = eventTarget.getElement( );
		String propName = eventTarget.getPropName( );
		ElementPropertyDefn prop = topElement.getPropertyDefn( propName );
		makeLocalCompositeValue( topElement, prop, null );
		return matchElement( topElement );
	}
	private DesignElement matchElement( DesignElement topElement )
	{
		List steps = eventTarget.stepIterator( );
		DesignElement tmpElement = topElement;
		for ( int i = steps.size( ) - 1; i >= 0; i-- )
		{
			Step step = (Step) steps.get( i );
			PropertyDefn stepPropDefn = step.stepPropDefn;
			int index = step.index;
			Object stepValue = tmpElement.getLocalProperty( module,
					(ElementPropertyDefn) stepPropDefn );
			if ( stepPropDefn.isListType( ) )
			{
				tmpElement = (DesignElement) ( (List) stepValue ).get( index );
			}
			else 
				tmpElement = (DesignElement) stepValue;
		}
		return tmpElement;
	}
	/**
	 * @param ref
	 * @param value
	 * @throws SemanticException