Reinitialize it in the section above your sub-report.  Then, if the results are NULL, you get the default value passed through.

To follow up on Kevin's suggestion, do something like this in the section above your subreport.  Add the formula (call it reset cafe) and drop it in the section above your subreport.  You can suppress the reset cafe formula so it doesn't print, but the formula has to be on the report's design,

WhilePrintingRecords;
shared numbervar Cafe

Cafe := 0

To follow up on Kevin's suggestion, do something like this in the section above your subreport.  Add the formula (call it reset cafe) and drop it in the section above your subreport.  You can suppress the reset cafe formula so it doesn't print, but the formula has to be on the report's design,

WhilePrintingRecords;
shared numbervar Cafe

Cafe := 0

WhilePrintingRecords;
shared numbervar Cafe := 0;

(You were missing a semi-colon... and it can be done in one line too).

Note: the section where the reset formula field exists cannot be suppressed, but the field can be.

Yes, you're right - I missed a semi-colon.

The semi-colon is optional on the last line, too.

Yes, you can declare the variable and assign it on the same line.

(I've seen a boolean value print without the trailing semi-colon, so I am in the habit of using it, but when suppressed the semi-colon is indeed optional).

This worked perfect! Thank you so much for your input!