How to make pagination in Bitrix?

Question

PHP

Hello!
There is a method: CIBlockElement :: GetList (...)
There is a parameter: arNavStartParams
The nTopCount parameter works, iNumPage does not work (I just send the page number there and wait for a miracle).
How can I make pagination?
Links to articles, please do not throw (only if there is a working code and with OFFSET!!!!)

Answer 1

Show how it is done now and then we can find an error. In general, if I were you, I would look at the source