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DataStore, attempt to perform arithmetic on local 'oldValue' (a nil value)?
-- remotefunctions kk
--serverscript
DS = game:GetService("DataStoreService"):GetDataStore("votes")
event = game.ReplicatedStorage.Events.VotePlayer1
event.OnServerEvent:connect(function()
DS:UpdateAsync("player1", function(oldValue) return oldValue + 1 end)
end)
-- inside the gui button
-- parenting
rs = game.ReplicatedStorage
events = rs.Events
votefunction = events:FindFirstChild("VotePlayer1")
-- script
local button = script.Parent
button.MouseButton1Down:connect(function()
votefunction:FireServer()
end)
This gives this error:
ServerScriptService.Script:13: attempt to perform arithmetic on local 'oldValue' (a nil value)
How would I define a value, this are all scripts I have..
but I have no clue how to fix this
1 answer
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2
The solution is in the error message. Apparently "oldValue" has returned nil for some reason, or wasn't returned at all. We can fix this by simply adding an "and" and "or" statement like so:
DS = game:GetService("DataStoreService"):GetDataStore("votes")
event = game.ReplicatedStorage.Events.VotePlayer1
event.OnServerEvent:connect(function()
DS:UpdateAsync("player1", function(oldValue)
return oldValue and oldValue+1 or 1 -- if old, then add 1. if not, return 1
end)
end)
rs = game.ReplicatedStorage
events = rs.Events
votefunction = events:FindFirstChild("VotePlayer1")
local button = script.Parent
button.MouseButton1Down:connect(function()
votefunction:FireServer()
end)
