[Threshold]

Код:

SetPlayerRaceCheckpoint(playerid, type, Float:x, Float:y, Float:z, Float:nextx, Float:nexty, Float:nextz, Float:size);

Read the wiki for god sakes...
https://sampwiki.blast.hk/wiki/SetPlayerRaceCheckpoint

This is not the scripting request thread, don't ask people to make your scripts for you here.