// Refuel a vehicle when driving a vehicle and pressing the HORN key
	// Check if the player presses the HORN key
	if ((newkeys & KEY_CROUCH) && !(oldkeys & KEY_CROUCH))
	{
		// Check if the player is driving a vehicle
		if (GetPlayerVehicleSeat(playerid) == 0)
		{
			// Loop through all ARefuelPickups
			for (new i; i < sizeof(ARefuelPickups); i++)
			{
				// Check if the player is in range of a refuelpickup
				if(IsPlayerInRangeOfPoint(playerid, 2.5, ARefuelPickups[i][pux], ARefuelPickups[i][puy], ARefuelPickups[i][puz]))
				{
					// Show a message that the player's vehicle is refuelling
					GameTextForPlayer(playerid, TXT_Refuelling, 3000, 4);
					// Don't allow the player to move again (the timer will allow it after refuelling)
					TogglePlayerControllable(playerid, 0);
				       // Start a timer (let the player wait until the vehicle is refuelled)
				    SetTimerEx("RefuelVehicle", 5000, false, "i", playerid);
				    // Stop the search
					break;
				}
			}
		}
	}

	return 1;
}

error 010: invalid function or declaration
Pawn compiler 3.2.3664	 	 	Copyright © 1997-2006, ITB CompuPhase


1 Error.

COMMAND:refill(playerid, params[])
{
		// Check if the player is driving a vehicle
		if (GetPlayerVehicleSeat(playerid) == 0)
		{
			// Loop through all ARefuelPickups
			for (new i; i < sizeof(ARefuelPickups); i++)
			{
				// Check if the player is in range of a refuelpickup
				if(IsPlayerInRangeOfPoint(playerid, 2.5, ARefuelPickups[i][pux], ARefuelPickups[i][puy], ARefuelPickups[i][puz]))
				{
					// Show a message that the player's vehicle is refuelling
					GameTextForPlayer(playerid, TXT_Refuelling, 3000, 4);
					// Don't allow the player to move again (the timer will allow it after refuelling)
					TogglePlayerControllable(playerid, 0);
				       // Start a timer (let the player wait until the vehicle is refuelled)
				    SetTimerEx("RefuelVehicle", 5000, false, "i", playerid);
				    // Stop the search
					break;
				}
			}
		}
	}
	return 1;
}