Rather than display the first value of each group in the group header, the report is easier to navigate if it displays the credit limit range for each group, as follows:
This procedure shows how to write a JavaScript expression to display these credit limit ranges. The procedure also shows how to create a column binding with which to associate the JavaScript expression.
for(i=50000; i<300000; i+=50000){
if( row["CREDITLIMIT"] < i ){
displayString = rangeStart + " - " + rangeEnd;