The allowed format is similar to the format used to specify a range of pages to print in a printer dialog:
•Use comas "," to separate individual pages (eg. 1,11,55,65,77,79,82)
•Use a hyphen "-" to specify a sequence of pages (eg. 5-12).
•Use a trailing hyphen to specify "until the end of the document" (eg. 1- means all pages of the document).
The above 3 formats can be mixed (eg. 1,3,5,7,9-22,77- ) but the trailing hyphen, if it is there, must be the very last character of the page selection string.