Sorting rows in crosstab

[jack w.]

I've been working on a crosstab recently, and everything is working fine but one - it sorts the rows alphabetically. In User Guide, I read that "Unlike in the main report, JasperReports will sort the data for you, although you can disable this function to speed up the fill process if your data is already sorted." I've been looking for  the "Data is pre sorted" checkbox people talk about in the internet, but I can't find it. Where is this checkbox and is this the solution?

https://community.jaspersoft.com/questions/543124/how-can-you-disable-crosstab-row-group-sorting

Here they say to right-click the crosstab and then "crosstab data". I don't see this option here.

I'm using Jaspersoft Studio 6.4.3 version.

[jack w.]

Ok, I found it. You have to go to Crosstab properties, click on Dataset and after that scroll to the very bottom to see the checkbox.