[cosbraa]

You can't compare 2 strings like that.
And PrawkC is talking about when you tried

pawn Код:

VehicleCheck[vehicleid][STRINGVARIABLE] = GetPlayerName(playerid, pName, MAX_PLAYER_NAME)

Use format(output[], len, const format[], {Float,_}:...) to store the players name into the STRINGVARIABLE.

EG:

pawn Код:

format(VehicleCheck[vehicleid][STRINGVARIABLE], MAX_PLAYER_NAME, "%s", GetPlayerName(playerid, pName, MAX_PLAYER_NAME));