public OnPlayerEnterDynamicCP(playerid, checkpointid)
{
    if(checkpointid == PracaSklep0[playerid])
    {
        DestroyDynamicCP(PracaSklep0[playerid]);
        new box = random(3);
        if(box == 0)
        {
            SetPlayerAttachedObject(playerid, 5, 19638, 5, 0.1, 0, 0.2, -90, 0, 0);
        }
        if(box == 1)
        {
            SetPlayerAttachedObject(playerid, 5, 19636, 5, 0.1, 0, 0.2, -90, 0, 0);
        }
        if(box == 2)
        {
            SetPlayerAttachedObject(playerid, 5, 2969, 5, 0.1, 0, 0.2, -90, 0, 0);
        }
        print("Dano cp");
        PracaSklep1[playerid] = CreateDynamicCP(243.7237,-45.6671,1.5853, 1, -1, 0, playerid, 50);
        return 1;
    }
    if(checkpointid == PracaSklep1[playerid])
    {
        DestroyDynamicCP(PracaSklep1[playerid]);
        GivePlayerMoney(playerid, 3);
        RemovePlayerAttachedObject(playerid, 5);
        PracaSklep2[playerid] = CreateDynamicCP(255.8060,-54.3830,1.5703, 1, -1, 0, playerid, 50);
        return 1;
    }
    if(checkpointid == PracaSklep2[playerid])
    {
        DestroyDynamicCP(PracaSklep2[playerid]);
        new box = random(3);
        if(box == 0)
        {
            SetPlayerAttachedObject(playerid, 5, 19638, 5, 0.1, 0, 0.2, -90, 0, 0);
        }
        if(box == 1)
        {
            SetPlayerAttachedObject(playerid, 5, 19636, 5, 0.1, 0, 0.2, -90, 0, 0);
        }
        if(box == 2)
        {
            SetPlayerAttachedObject(playerid, 5, 2969, 5, 0.1, 0, 0.2, -90, 0, 0);
        }
        PracaSklep3[playerid] = CreateDynamicCP(245.6620,-43.4706,1.5853, 1, -1, 0, playerid, 50);
        return 1;
    }
    if(checkpointid == PracaSklep3[playerid])
    {
        DestroyDynamicCP(PracaSklep3[playerid]);
        GivePlayerMoney(playerid, 3);
        RemovePlayerAttachedObject(playerid, 5);
        PracaSklep4[playerid] = CreateDynamicCP(255.7639,-59.7145,1.5703, 1, -1, 0, playerid, 50);
        return 1;
    }
    if(checkpointid == PracaSklep4[playerid])
    {
        DestroyDynamicCP(PracaSklep4[playerid]);
        new box = random(3);
        if(box == 0)
        {
            SetPlayerAttachedObject(playerid, 5, 19638, 5, 0.1, 0, 0.2, -90, 0, 0);
        }
        if(box == 1)
        {
            SetPlayerAttachedObject(playerid, 5, 19636, 5, 0.1, 0, 0.2, -90, 0, 0);
        }
        if(box == 2)
        {
            SetPlayerAttachedObject(playerid, 5, 2969, 5, 0.1, 0, 0.2, -90, 0, 0);
        }
        PracaSklep5[playerid] = CreateDynamicCP(244.7875,-44.2390,1.5853, 1, -1, 0, playerid, 50);
        return 1;
    }
    if(checkpointid == PracaSklep5[playerid])
    {
        DestroyDynamicCP(PracaSklep5[playerid]);
        GivePlayerMoney(playerid, 3);
        RemovePlayerAttachedObject(playerid, 5);
        PracaSklep6[playerid] = CreateDynamicCP(244.3752,-59.3114,1.5776, 1, -1, 0, playerid, 50);
        return 1;
    }
    if(checkpointid == PracaSklep6[playerid])
    {
        DestroyDynamicCP(PracaSklep6[playerid]);
        new box = random(3);
        if(box == 0)
        {
            SetPlayerAttachedObject(playerid, 5, 19638, 5, 0.1, 0, 0.2, -90, 0, 0);
        }
        if(box == 1)
        {
            SetPlayerAttachedObject(playerid, 5, 19636, 5, 0.1, 0, 0.2, -90, 0, 0);
        }
        if(box == 2)
        {
            SetPlayerAttachedObject(playerid, 5, 2969, 5, 0.1, 0, 0.2, -90, 0, 0);
        }
        PracaSklep7[playerid] = CreateDynamicCP(244.8187,-45.2606,1.5853, 1, -1, 0, playerid, 50);
        return 1;
    }
    if(checkpointid == PracaSklep7[playerid])
    {
        DestroyDynamicCP(PracaSklep7[playerid]);
        RemovePlayerAttachedObject(playerid, 5);
        GivePlayerMoney(playerid, 3);
        PracaSklep8[playerid] = CreateDynamicCP(244.5232,-54.5706,1.5776, 1, -1, 0, playerid, 50);
        return 1;
    }
    if(checkpointid == PracaSklep8[playerid])
    {
        DestroyDynamicCP(PracaSklep8[playerid]);
        GivePlayerMoney(playerid, 1);
        return 1;
    }
    return 1;
}

PracaSklep0[playerid] = CreateDynamicCP(...);

if(checkpointid == PracaSklep0[playerid])

DestroyDynamicCP(PracaSklep0[playerid]);

PracaSklep1[playerid] = CreateDynamicCP(243.7237,-45.6671,1.5853, 1, -1, 0, playerid, 50);

public OnPlayerEnterDynamicCP(playerid, checkpointid)
{
    if(checkpointid == 1)
    {
        DestroyDynamicCP(1);
        print("Dano cp");
        PracaSklep1[playerid] = CreateDynamicCP(243.7237,-45.6671,1.5853, 1, -1, 0, playerid, 50); //PracaSklep1[playerid] = 1, PracaSklep0[playerid] = 1 - ???
        return 1;
    }
}