[Swimor]

You should use strcmp to compare two string like you did,
try this:

Код:

cmd(test, playerid, params[])
{
    for(new i=0; i < MAX_OWNEDVEHICLES; i++)
    {
        if(!strcmp(VehicleOwner[i], PlayerName(playerid), true)) // This is the error line
	{
            // ...
	}
    }
}