groupBy() and text type columns

I am using groupBy()

I would like to know:

  1. if it is possible to put into a group title value from the fifth column “COIL DESCR” (it is a sting and it always has the same values withing a group) and how?
  2. how can I format fourth column “BATCH”, so I it will be shown in a group title like “0016” instead of “16”. I’ve tried to use setNumberFormat(), but it didn’t solve the problem.


For the formating of the group’s header you may use the mask attribute of groupBy() method: … ct_groupby