[Face9000]

If you're using a streamer:

pawn Код:

new CPs[1];
#define JanitorCp 1

(1 stays for checkpoint number, if you dont have any other checkpoints, this will be the first)

OnPlayerEnterDynamicCP:

pawn Код:

if(checkpointid == CPs[JanitorCp])
{
//Do your things
}

On the command remove:

pawn Код:

SetPlayerCheckpoint(playerid,451.3937,231.4031,880.5094,10.0);

And add:

pawn Код:

CPs[JanitorCp] = CreateDynamicCP(451.3937,231.4031,880.5094,10.0);

Don't use default streamed checkpoint if you're willing to add multiple checkpoints in your gamemode.