Looking for a formula on a report

Hi,

I have the following formula  @sqft:

global stringvar etikettnr8;

numberVar sqft8 := 0;

if   {awbar_teile.etikettnr} = etikettnr8

then sqft8  := 0

else sqft8  := {pool_teile.breite}/304800 * {pool_teile.hoehe}/304800;

etikettnr8  := {awbar_teile.etikettnr};

sqft8;

It's on the detail line.

I have Summaries at Groups 1,2,3

It doesn't work consistantly, sometimes it 0's, sometimes not.  I can hit <F5><Enter>, and watch the total summary jump around.  The variables do not exist anywhere else in the report.

So, when I add WhilePrintinRecords, I get an error:

A summary has been specified on a non-recurring field.  Details: @sqft

i don't understand what this is telling me, noe do I understand how a field on a detail line could be non-recurring.