[ThePhenix]

Try to debug so, you can know where exactly is the problem:
Here's an example:

pawn Код:

if(newkeys & KEY_FIRE)
    {
        print("1: It got called.");
        if(BuildRace == playerid+1)
        {
            print("2: It got called.");
            if(BuildTakeVehPos == true)
            {
                print("3: It got called.");

Try to use this plugin aswell:
https://sampforum.blast.hk/showthread.php?tid=262796

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Make sure you have rRaceSystem folder in your scriptfiles folder.