To start,
Our company uses a construction software which uses Crystal to process all its reports. I have Crystal 2011 for the purpose of creating some reports and modifying some existing "canned" reports that come with the system.
I have a billing report (from the system) with a subreport in the GH3b. The report runs fine as is, but I have been asked to add a field to one of the formulas. The table is already selected and linked, so I opened the sub report and added the field I wanted to the sum in the formula.
Original Formula:
{@TotalPosCo}+{@TotalNegCO}
My Formula:
{@TotalPosCo}+{@TotalNegCO}-{@CurrPCO}

I'm not sure why, but when I rerun the report after making this modification, all data fields are blank in the sub report, not just formulas, it's like it pulls nothing from the DB for the sub report. The main report detail fields remain intact and correct, just the sub report breaks.

My CurrPCO field is represented in the main report PH and the @CurrPCO is represented in the Main Report Details.
What am I missing, why does the subreport go blank? What link am I breaking by modifying that canned report?

Thanks in advance for your help.
--Ben

Initially there was not a shared variable.
Incorrect Working Code (ie this is what they had from a previous developer, it compiled and came up with the right data, but I know it's wrong):
if {JCCI.udG703Grouping} = 'X' then {JBIS.CurrContract}+{JBIS.ChgOrderAmt} else 0

This was then summarized in GH3b on the main report and manipulated in the same field as the sub report to align with the sub report. When the sub report was drilled down, because this total was in the main report only, it would vanish.

My "fix" to try to pass the variable:
Modified code in @CurrPCO formula to:
Shared CurrencyVar PCOCurr;
if {JCCI.udG703Grouping} = 'X'
    then PCOCurr:={JBIS.CurrContract}+{JBIS.ChgOrderAmt}
    else PCOCurr:=0;

Then, in the subreport, I setup @PCOData:
Shared CurrencyVar PCOCurr;

Admittedly, I have no idea what this Summary is doing but it actually has the correct total. My "Fix" actually crashes the report "Loading Crystal Assemblies and report Template....failed: Load Report Failed" The statements do save without error.

So, long story short (too late) I am trying to fix this by creating a shared variable passed to the sub, but it's not working.
thanks for your time.
--Ben

Ok, I'm halfway there...
Report no longer crashes with my code and it passes a variable, but it's not calculating (ie, it's passing 0, not the $2800 amount I'm expecting).
Now I just need to edit the math or figure out what's not firing on the calculation side.
But the variable is passing and the data isn't blanking out...haha, Christmas Win!!

Thanks for your help.
--Ben