Bug 135790 ClassCastException in RowData.
ClassCastException is thrown in RowData line 81(IBaseExpression expr = ( IBaseExpression ) valueExpressions.get( index - 1 );).
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/script/internal/instance/ReportElementInstance.java
return content.getY( ).toString( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.api.script.instance.IReportInstance#setVerticalPosition(java.lang.String)
	 */
	public void setVerticalPosition( String position )
	{
		content.setY( DimensionType.parserUnit( position ) );
	}
	public String getWidth( )
	{
		return content.getWidth( ).toString( );
	}
	public void setWidth( String width )
	{
		content.setWidth( DimensionType.parserUnit( width ) );
	}
	
	public String getHeight( )
	{
		return content.getHeight( ).toString( );
	}
	public void setHeight( String height )
	{
		content.setHeight( DimensionType.parserUnit( height ) );
	}
}