[Skimmer]

@iJumbo 's ones is also good, but you need create this everywhere, where you create a checkpoint. I recommend to use stock-function.

pawn Код:

stock SetPlayerCheckpointEx(playerid, Float:x, Float:y, Float:z, Float:range, id)
{
    SetPlayerCheckpoint(playerid, x, y, z, range);
    Checkpoint[playerid] = id;
}