hi,
How can I suppress a group header when I have a condition that suppress the detail in section expert.
if I put the same formula in group header section expert . this suppress the the group header for every thing.
the formula work well suppressing on detail all what I don't need. But I need to keep the group header when it have detail show on the report.

The problem is that my condition formula depend of the summary of a running total. because of that i cannot make a total of that summary and put it on the group header.

also I've create another formula :
If previous({vwDocument.DocumentNumber})=({vwDocument.DocumentNumber}) Then
  1
Else
 0

but crystal see that as a summary  also. and I cannot insert a summary of this and insert in the group header.

I will appreciate if any body can help me

My Detail section expert formula is:
IF ISNULL({#count3})  OR {#count3} = 1 THEN TRUE ELSE FALSE.
-------------------------------------------------

I have a formula where I get the first character on a document Number
ex: my documentNumber is  SO2-0004567
but on the line
SO2-0004567-23456
SO2-0004567-36782
SO2-0004567-23189
 so this invoice have 3 item line.
the only way for my to know how many line an invoice number have is getting the first 11 character of the invoice .
because I have group for customer number .


I have a formula named:fist11-character:
left({vwFedEx.DocumentNumber},instr(strreverse({vwFedEx.DocumentNumber}),"*")+11)
base on that, I have a running total
as  follow:
Running total name: count3
field to summarize: @fist11-character
Evaluate for each reacord
reset on change of field @fist11-character


on my suppression I only need customer with invoice that have more than one line.  Invoice with only 1 line I don't need it.

thanks

the problem i can't count that field because when the document number change  example:
Customer  Pedro Pablo
SO2-0050836-150567
SO2-0050836-150568
SO2-0050836-150569
SO2-0050864-150669
SO2-0050864-150671
SO2-0049753-146599

on this example this customer have 3 different Document number  ,
SO2-0050836 with 3 line
SO2-0050864  with 2 line
SO2-0049753 with 1 line

 that's why I had to make a running total to count and diferenciate when the document number change.
If I count in the way you said  , It will take total as only 1 document number.

thanks

Well, today I realize that it doesn't work at all.
Becuse if the customer Group at least it have one invoice number with total count <=1 , it suppress the complete group header.
exam:
Group Header Customer  Pedro Pablo
 Group by Invoice@fist11-character  
        SO2-0050864
              SO2-0050864-150669
                Count 1
        SO2-0050836
          SO2-0050836-150567
          SO2-0050836-150568
          SO2-0050836-150569
               Count 3
      
Because at least one of the count is equal to 1  , it remove the customer header.

but the suppression on detail work fine.

the problem is I have detail without customer name.
I have tried  different think on the suppress for Customer group but without any luck.

That's was the part that was missing.

It work.
Thank you!!   Thank you!!
You saved me.