API Commerce speeches

[MVllt]

Hi!
I'm trying to use your API (to retrieve the speeches from all Secretaries of Commerce since January 2009), but it does not seem to take into account any of the parameters I enter... All links give me exactly the same results, whatever the parameters used.

For instance, all three links below produce exactly the same results:
https://api.commerce.gov/api/news/?api_key=MYKEY
https://api.commerce.gov/api/news/?api_key=MYKEY&page[offset]=50&page[limit]=50
https://api.commerce.gov/api/news/?api_key=MYKEY&page[offset]=100&page[limit]=50

Same when I try to filter by speaker or news_type.

Do you know how I could effectively enter parameters? Would you mind sharing an example of a correct use of such filters (if I'm doing it wrong) please?

Many thanks!