[1fret]

I followed this tutorial on how to make a airdrop system but the airdrop goes through the ground i dont know why but could someone help me please.

PHP код:

CreateAirdrop(Float:x, Float:y)
{
    for(new i; i < MAX_AIRDROPS; i++)
    {
        if(! gAirdrop[i][AIRDROP_EXIST])
        {
            new Float:z;
            MapAndreas_FindZ_For2DCoord(x, y, z);
            z += (6.4653 + 1.0000);
            gAirdrop[i][AIRDROP_OBJECT] = CreateDynamicObject(18849, x, y, (z + 100.0), 0.0, 0.0, 0.0);
            MoveDynamicObject(gAirdrop[i][AIRDROP_OBJECT], x, y, z, 5.0);
            gAirdrop[i][AIRDROP_POS][0] = x;
            gAirdrop[i][AIRDROP_POS][1] = y;
             gAirdrop[i][AIRDROP_POS][2] = (z - (6.4653 + 1.0000));
            gAirdrop[i][AIRDROP_EXIST] = true;
            gAirdrop[i][AIRDROP_EXPIRE] = -1;
            gAirdrop[i][AIRDROP_PICKED] = true;
            return i;
        }
    }
    return -1;
}