Bug 211703 Support muti-view on report item.
As title described.
xtab/org.eclipse.birt.report.item.crosstab.core/src/org/eclipse/birt/report/item/crosstab/core/de/CrosstabReportItemHandle.java
* 
	 * @param cell
	 * @param value
	 * @throws CrosstabException
	 */
	public void setRowHeight( CrosstabCellHandle cell, DimensionValue value )
			throws CrosstabException
	{
		cell = CrosstabModelUtil.locateRowHeightCell( this, cell );
		if ( cell != null )
		{
			try
			{
				cell.getHeight( ).setValue( value );
			}
			catch ( SemanticException e )
			{
				throw new CrosstabException(
						this.getModelHandle( ).getElement( ),
						Messages
								.getString( "CrosstabReportItemHandle.error.set.row.height" ), 
						e );
			}
		}
		else
		{
			throw new CrosstabException(
					this.getModelHandle( ).getElement( ),
					Messages
							.getString( "CrosstabReportItemHandle.error.locate.row.cell" ) );