You have to use shared variable(s) to do this. Set the shared variable in the subreport with the value you want. Then use the the shared variable in the main report. The one thing to remember is that the sub-report has to be in a section before where you want to see the values from the sub-report. There should be a lot of information on how to this on the internet.

There is a lot of help on line but it's not all completely helpful. I have been messing around and got the field from the subreport to show up and I'm sure this is something silly but my end formula is off by a line. I think it has to do w/ the detail b section but I'm not sure what to do. I'm wondering if you would be able to spot what I'm doing wrong w/ the 2 screenshots.

The sub should be in detail_a and all other fields in detail_b. If you want to show the value from the sub by displaying the sub in alignment with other fields, you would then format Detail_a to “underlay following sections”.

As an alternative, you could leave the sub in detail_a, all else in detail_b, and then pass the value from the sub in a shared variable that you then reference in the main report in a new formula. You would then suppress all sections within the sub (do not suppress the sub directly or the section it is in) and then remove the borders. Format the sub to “suppress blank subreport” (formata->subreport). Then in the section expert format detail_a to suppress blank section.

-LB