shared variable oxymoron!!!!

[sixfoottrackjohnno]

I have a CR v8 report (CRW32 8.0.0.441) which consists of a main report and 3 subreports. I was attempting to do some conditional page breaks to ensure that group header and their subtotals do not span pages(groups are small <= 5 items) I did not get this to work in all the subreports one did two didn't. I then made the assumption that my formulae were in error so proceeded to insert debug formulae in the relevant group header and subtotal places.

here are two of the formulae.
========================================

1.
WhilePrintingRecords;
shared Numbervar acc_rec_count;
global numbervar numberingroup;
shared numbervar acc_linesleft;
shared booleanVar acc_temp1 := TRUE;
shared booleanVar acc_temp2 := false;
shared booleanVar acc_temp := true;
if ((numberingroup + 2)> acc_linesleft) then
(
//acc_rec_count := 0;
acc_temp := acc_temp1;
)
else
acc_temp := acc_temp2;
acc_temp

=======================================
2.
shared booleanVar acc_temp;
acc_temp

the first is the criteria by which I want the group to start on a new page, minus a reset , so I can monitor the progress of the boolean variable down the page. The second just displays the variable. I place both formulae in the group footer and header down the page and get the following output.

1. 2.
.
.
.
false false
false false
true false
jumps to new page due to format formula in group header.
true true
false true
false false
.
.
.

I was under the impression that a shared variable was like a global in the C sense. I wonder whether any gifted individual could explain this behaviour to me then i may be
able to sort out my other problem. formula 1 and 2 are placed adjacent to each other in the group header and footer
with no other formula in between. My reaction is that of a brain dead product or a product that is rendering me braindead, I have already installed the CR patch for shared variables.

thank u in advance

sixfoottrackjohnno.