Test Race Code. (Not Working)

#include <a_samp>
#include <zcmd>
#include <sscanf2>
#include <streamer>

new bool:IsPlayerInAnyRace[MAX_PLAYERS] = false;
new bool:IsRaceReady = false;
new RaceID = 0;
new LVAtoLSARCP[MAX_PLAYERS];

enum eLVAtoLSA
{
	Race_Name[128],
	Float:Spawn1X,
	Float:Spawn1Y,
	Float:Spawn1Z,
	Float:Spawn1Rot,
	Float:Spawn2X,
	Float:Spawn2Y,
	Float:Spawn2Z,
	Float:Spawn2Rot,
	Float:Spawn3X,
	Float:Spawn3Y,
	Float:Spawn3Z,
	Float:Spawn3Rot,
	Float:Spawn4X,
	Float:Spawn4Y,
	Float:Spawn4Z,
	Float:Spawn4Rot,
	Float:CheckPointOneX,
	Float:CheckPointOneY,
	Float:CheckPointOneZ,
};

new aLVAtoLSA[][eLVAtoLSA] =
{
	{"LV Airport to LS Airport", 1488.6746, 1772.4385, 10.4721, 179.4206, 1485.4292, 1772.4133, 10.4712, 180.8636, 1481.7975, 1772.2255, 10.4715, 181.3873, 1478.2819, 1772.1654, 10.4711, 180.8334, 1477.5648, 1573.8988, 10.4702}
};

forward UnfreezePlayerWhenRaceStarts(playerid);

public OnPlayerEnterDynamicRaceCP(playerid, checkpointid)
{
	new cpid = 45;
	if(checkpointid == LVAtoLSARCP[playerid])
	{
		switch(cpid)
		{
			case 0:
			{
				DestroyDynamicRaceCP(LVAtoLSARCP[playerid]);
				LVAtoLSARCP[playerid] = CreateDynamicRaceCP(0, 1477.4507, 1350.2292, 10.4852, 1434.1123, 1261.1077, 10.4770, 10, -1, -1, playerid, 500.0, -1, 0);
				cpid = 1;
			}
			case 1:
			{
				DestroyDynamicRaceCP(LVAtoLSARCP[playerid]);
				LVAtoLSARCP[playerid] = CreateDynamicRaceCP(0, 1388.6649, 1339.0302, 10.4805, 1388.9872, 1639.1466, 10.4733, 10, -1, -1, playerid, 500.0, -1, 0);
				cpid = 2;
			}
			case 2:
			{
				DestroyDynamicRaceCP(LVAtoLSARCP[playerid]);
				LVAtoLSARCP[playerid] = CreateDynamicRaceCP(0, 1388.9872, 1639.1466, 10.4733, 1432.1963, 1732.1799, 10.4765, 10, -1, -1, playerid, 500.0, -1, 0);
				cpid = 3;
			}
			case 3:
			{
				DestroyDynamicRaceCP(LVAtoLSARCP[playerid]);
				LVAtoLSARCP[playerid] = CreateDynamicRaceCP(0, 1432.1963, 1732.1799, 10.4765, 0.0, 0.0, 0.0, 10, -1, -1, playerid, 500.0, -1, 0);
				cpid = 4;
			}
		}
	}
	return 1;
}

public UnfreezePlayerWhenRaceStarts(playerid)
{
	TogglePlayerControllable(playerid, 1);
}

CMD:startrace(playerid, params[])
{
	new string[144], rid;
	if(sscanf(params, "d", rid)) return SendMessage(playerid, -1, "USAGE: /startrace (RaceID: 0 - 1)");
	if(!IsRaceReady)
	{
		RaceID = rid;
		if(RaceID == 1)
		{
			IsRaceReady = true;
			format(string, sizeof(string), "The race %s is now ready. Use /joinrace to take part, race starts in 45 seconds.", aLVAtoLSA[0][Race_Name]);
			SendMessageToAll(-1, string);
		}
	}
	return 1;
}

CMD:joinrace(playerid, params[])
{
	new vehid;
	if(IsPlayerInAnyRace[playerid]) return SendMessage(playerid, -1, "You are already in an active race.");
	if(!IsRaceReady) return SendMessage(playerid, -1, "There is no race currently active.");
	else if(IsRaceReady)
	{
		if(RaceID == 1)
		{
			IsPlayerInAnyRace[playerid] = true;
			if(IsPlayerInAnyVehicle(playerid))
			{
				vehid = GetPlayerVehicleID(playerid);
				SetPlayerPos(playerid, aLVAtoLSA[0][Spawn1X], aLVAtoLSA[0][Spawn1Y], aLVAtoLSA[0][Spawn1Z]);
				SetVehiclePos(vehid, aLVAtoLSA[0][Spawn1X], aLVAtoLSA[0][Spawn1Y], aLVAtoLSA[0][Spawn1Z]);
				SetVehicleZAngle(vehid, aLVAtoLSA[0][Spawn1Rot]);
				PutPlayerInVehicle(playerid, vehid, 0);
				TogglePlayerControllable(playerid, 0);
				SetTimerEx("UnfreezePlayerWhenRaceStarts", 45000, false, "i", playerid);
				LVAtoLSARCP[playerid] = CreateDynamicRaceCP(0, aLVAtoLSA[0][CheckPointOneX], aLVAtoLSA[0][CheckPointOneY], aLVAtoLSA[0][CheckPointOneZ], 1477.4507, 1350.2292, 10.4852, 10, -1, -1, pla, 500.0, -1, 0);
			}
		}
	}
	return 1;
}

stock PlayerName(playerid)
{
    new name[MAX_PLAYER_NAME];
    GetPlayerName(playerid, name, MAX_PLAYER_NAME);
    return name;
}