Remote function returning nil?

Help and Feedback Scripting Support
#1

Hi there!
I just started scripting and i am trying to script a buy shop menu.However i came across a problem.Whenever I purchase the item I am able to buy it.However when I print for a return it printed out nil.I was wondering what is the problem as I have scripted it to print out “true” if you buy it and “False” if something went wrong.However it only printed out nil.
Any help would be appreciated!

BuyTitle = function(plrName,ItemName)
		local player = game.Players:FindFirstChild(plrName)
		local inventory = player.OwnedTitles
		local Tokens = player.PlayerValues.Tokens.Value
		local Titles = game.ReplicatedStorage.Titles
		local Item = Titles:FindFirstChild(ItemName)
		local Price = Item.Price.Value
		if Tokens >= Price then 
			local endtokens = Tokens - Price
			Tokens = endtokens
			local insert = Instance.new("StringValue")
			insert.Name = Item.Name
			insert.Value = Item.Name
			insert.Parent = inventory
			
			return true
		else 
			
			return false
		end
2 Likes
#2

It would be good if you could show some more code, preferably the entire script, but I believe that you may be setting the value of the variable BuyTitle instead of the callback function. Try replacing the top line with this instead:
BuyTitle.OnServerInvoke = function(plrName,ItemName)

#3

Hey!Thanks for replying.
I forgot to mention that this code is in a module script.
local script:

BuyTitle.OnServerInvoke = function(player,ItemName)

local plyrname = player.Name

BuyModule.BuyTitle(plyrname,ItemName)

end

module script:

BuyTitle = function(plrName,ItemName)
		local player = game.Players:FindFirstChild(plrName)
		local inventory = player.OwnedTitles
		local Tokens = player.PlayerValues.Tokens.Value
		local Titles = game.ReplicatedStorage.Titles
		local Item = Titles:FindFirstChild(ItemName)
		local Price = Item.Price.Value
		if Tokens >= Price then 
			local endtokens = Tokens - Price
			Tokens = endtokens
			local insert = Instance.new("StringValue")
			insert.Name = Item.Name
			insert.Value = Item.Name
			insert.Parent = inventory
			print("true")
			return true
		else 
			print("false")
			return false
		end

server script:

BuyTitle.OnServerInvoke = function(player,ItemName)
	local plyrname = player.Name
	BuyModule.BuyTitle(plyrname,ItemName)
end
#4

I’m a little bit confused on one thing; that being that the value of the Local Script and the Server Script are the same

#5

My bad!Accidentally pasted twice.
Heres the scripts:
local script:

local button = script.Parent
local BuyTitleRemote = game.ReplicatedStorage.Remotes.BuyTitle
button.MouseButton1Click:Connect(function()
	local itemname = button.Parent.Name
	if button.Name == "Buy" then 
		local result = BuyTitleRemote:InvokeServer(itemname)
		print(result)
		if result == true then
			button.Name = "Equip"
		end
	elseif button.Name == "Equip" then
		print("Equipping..")
	elseif button.Name == "Unequip" then 
		print("Unequipping")
	end
end)

server script:

BuyTitle.OnServerInvoke = function(player,ItemName)
	local plyrname = player.Name
	BuyModule.BuyTitle(plyrname,ItemName)
end

module script:

BuyTitle = function(plrName,ItemName)
		local player = game.Players:FindFirstChild(plrName)
		local inventory = player.OwnedTitles
		local Tokens = player.PlayerValues.Tokens.Value
		local Titles = game.ReplicatedStorage.Titles
		local Item = Titles:FindFirstChild(ItemName)
		local Price = Item.Price.Value
		if Tokens >= Price then 
			local endtokens = Tokens - Price
			Tokens = endtokens
			local insert = Instance.new("StringValue")
			insert.Name = Item.Name
			insert.Value = Item.Name
			insert.Parent = inventory
			print("true")
			return true
		else 
			print("false")
			return false
		end
#6

Ah! Thank you for the clarification. I believe that you forgot to add a return statement on line 3 of the server script.
Try replacing line 3 with the following:
return BuyModule.BuyTitle(plyrname,ItemName)

1 Like
#7

Oh!Thanks man it worked and returned true.Thanks for the help really!

1 Like