Hello.
I am the author of jNextReportsB4J.
Some time ago, I uploaded the source code in the library page (
https://www.b4x.com/android/forum/t...view-reports-generated-by-next-reports.57908/), so please feel free to use it.
However, if I understand correctly what you need to achieve, it seems to me that you want to create groups based on the value of a column (so, you create group A, group B, group C, etc) and insert a blank row between each group.
If this is correct, it has nothing to do with the library itself. You need to create the groups and insert the blank space during the design phase of your report with NextReports designer (i.e. the work that you do in order to create your NextReports report file, prior to reaching what is mentioned as "Step 1" in the HOW TO USE section in the above link).
You can find where the NextReports report file is located by checking your B4J code where you use the report: the location and name of the report should be specified and then added to the inputlist argument, prior to calling
Dim therep As jNxtReportsB4J
therep.reportPrepAndRun(inputlist)
So, you should get the NextReports report file and edit it with NextReports designer to add the grouping functionality that you want.