[Tee]

I fell silly asking this but, what's the max number of checkpoints in sa-mp? I just didn't know :

[Macluawn]

1


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[Tee]

Dynamically?

[=WoR=Varth]

https://sampwiki.blast.hk/wiki/Limits

If you mean using streamer, it's unlimited (CMIIW) but still only one checkpoint will appear.

[grand.Theft.Otto]

Not sure about the streamer limit, but for sure its 1+ checkpoints.

Maximum checkpoints via SetPlayerCheckpoint is 01.