Bug 135265 Paste to a wrong column
Steps to reproduce: 1.Open the attached file 2.Choose the column[2] which contains a label , copy and paste to column[3] Expected result: It will be pasted to column[3] Actual result: It is pasted to column[4] The related bug is #103448
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/PropertyHandle.java
*/
	public void addItem( Object item ) throws SemanticException
	{
		if ( item == null )
			return;
		if ( item instanceof IStructure )
			super.addItem( (IStructure) item );
		else
		{
			PropertyCommand cmd = new PropertyCommand( getModule( ),
					getElement( ) );
			cmd.addItem( propDefn, item );
		}
	}
	/**
	 * Removes an item from a list property. The handle must be working on a
	 * list property.
	 * 
	 * @param item
	 *            The new item to add.
	 * @throws SemanticException
	 *             If the property is not a list property, or if the the value
	 *             of the item does not exist in the element.
	 */
	public void removeItem( Object item ) throws SemanticException
	{
		if ( item == null )
			return;
		if ( item instanceof IStructure )
			super.removeItem( (IStructure) item );