Passing Array From Subreport to Main Report then Summing

Question

Hi,
I am having troble passing an array from a sub report to the main repport.  I have managed to create the array, pass it and display it in the main report, however the first value of the array is displayed twice.  Here is the  formulae I have used:
In the sub report:
whileprintingrecords;
shared stringvar str;
str:=str{@value}","
In the main report:
whileprintingrecords;
shared stringvar str;
stringvar array arr;
arr:=split(str,",");
join(arr,",")
Also, when I have managed to resolve the problem of the first value printing twice, I hope to change the array back to a number array and sum all of the values together.  I'm not too sure how to do this either.
I hope you can help.
Julie

Answer 1

Ummm... Isn't Join(Split(str,","), ",") = str?  Why bother with the two extra lines of code?  Also, are you sure the subreport isn't creating the "duplicate first value"?  (I.e.  The data has the same value on two records, so it's being added twice?)
Also if you're looking for the sum, why not create another shared variable and sum the value in the subreport as you're building the array (assuming you need the array for other purposes)?
HTH,
Carl