# Crystal Reports Sub-report formula

Hello all -

I've created a report that we use for counting inventory in a warehouse environment.  The main report takes the location parameter, adds titles, displays how many locations are being counted, and also a running total of how many individual parts were counted, based on a variable formula from the subreport.  I had this all working great until we realized that locations without inventory were not being shown, so I remedied that by removing the part.qty>0 from just the main report, but leaving on the subreport, which shows the actual part numbers and piece counts of the location.

Works great, but the formula is adding the value from the last location for each subreport, even if there are no records in the subreport:
You can see that the "Running total of parts counted" is adding 5 for each instance of the subreport, when it should not be.  How do I make this go away?

Here's how the formulas work:
In subreport:
formula @subtot2  (in report footer, hidden)
shared numbervar subtot1;
subtot1:= sum({command.part_qty});

In main report:
formula @grandtot (in group footer)
shared numbervar subtot1;
subtot1;
numbervar x;
x:= x+subtot1

Like I said, everything works exactly how I need with the exception of the 'bonus' addition.

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Systems SpecialistAuthor Commented:
Here's a shot that has better data:

Location-Snap-2.pdf
Commented:
From the PDF I can't tell which section the pieces are in.
The problem is if the subreport has no data then the formula never executes to set it to the  0 value.

You need to set the shared variable to 0 in the mainreport either in the group header or in the group footer.  It can't be in the section wherever the subreport is or where you display it in the main report.

I suspect what you need is to add a formula to either the main report group header/footer that 0's the shared variables

``````shared numbervar subtot1;
subtot1 := 0;
''
``````

mlmcc

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Commented:
Just had a thought.  You could also do it in the grandtotal formula

``````shared numbervar subtot1;
subtot1;
numbervar x;
x:= x+subtot1;
subtot1 := 0;
x
``````

mlmcc
Systems SpecialistAuthor Commented:
Thank you mlmcc - perfect solution!
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