Get posts of chanel, increase limit

[sazearte]

i try to get posts for a chanel :https://mymattermost/api/v4/channels/chennelid/posts

but I have posts from just 2 weeks ago, can i increase limit/offset for have posts from 3 months ago ?
or can i set a range date parameter ?

and the solution for api v1 not work:

API Get latest messages from a channel

What api url can I use to get the most recent messages from a channel? I know I can use a outgoing webhook to get messages as they are sent but I would like to retrieve previous messages like the last 5 sent. Slack has a channel.history api method, however this did not seem to work here. Documentation of the possible web service api urls would be really helpful. I checked the github logs and there doesn’t seem to have been any progress here for 2 months.

thanks in advance