Question lz_report variable TOTALPAGES not working

I made a report with lz_report which in the footer should print "pages <page number> of <total number of pages>" but it print "page 1 of 0".
In the Text editor of the report designer I inserted the variable PAGE# and TOTALPAGES in the footer band (see first attached screenshot).
Alas the result is a correct page number but a zero total pages number (see second attached screenshot).
This looks like a bug to me, can it be fixed easily?

Thanks!