if (categorySeries != null && categorySeries.length > 0)
{
JRExpressionCollector seriesCollector = collector.getCollector(dataset);
for(int j = 0; j < categorySeries.length; j++)
{
seriesCollector.addExpression(categorySeries[j].getSeriesExpression());
seriesCollector.addExpression(categorySeries[j].getCategoryExpression());
seriesCollector.addExpression(categorySeries[j].getValueExpression());
seriesCollector.addExpression(categorySeries[j].getLabelExpression());
seriesCollector.collectHyperlink(categorySeries[j].getItemHyperlink());