Script passing messed up values to module

[azuritee3 (psi)]

I’m trying to pass some parameters through a script to a modulescript, although it’ll destroy the params value and replace the plr value with the original params value
Script:

game.ReplicatedStorage.Remotes.Admin.OnServerEvent:Connect(function(plr, command, params)
	if table.find(UIds, plr.UserId) and commands[command] then
		commands[command](plr, params)
	end
end)

Module:

local datastore = require(game.ServerStorage.Modules.DataStore)
local command = {}

function command:gcash(plr, params)
	local pastdata = datastore:GetPlayerData(plr)
	local success, err = pcall(function()
		datastore:UpdateAsync(plr.UserId, function(pastdata)
			pastdata["Credits"] += params[1]
			return pastdata
		end)
	end)
end

[AustnBlox (Austin)]

This is a basic example of how you could pass data to a ModuleScript:

Module:

local Module = {}

function Module.Print(Argument)
    print(Argument)
end

return Module

Script:

local Module = require(script.Module)
Module.Print("Hello World!")

[azuritee3 (psi)]

It does pass the data, although I’m trying to figure out why it passes the wrong data
this is what the script prints:

this is what the module prints:

It should be passing the same exact values, although it doesn’t

[Kitsomia (Mia)]

There’s a difference when defining functions within tables/modules.

If you define the function with a dot:

function module.foo(argument)
    print(argument)
end

module.foo("Something") -- Prints "Something"

but when defining the function with a colon:

function module:foo(argument)
    print(argument)
end

module.foo("Something") -- Prints "nil"
module:foo("Something") -- Prints "Something"
module["foo"]("Something") -- Prints "nil"

This is due to Lua’s syntax, when you define the function with a colon, the first passed variable is ‘self’ and depending on how you call the function defines which is the first passed variable. Calling a function with a colon makes the first passed variable itself which should be the table the function is defined in.

To see more in detail what self is.

[azuritee3 (psi)]

Thanks! Been struggling with this problem for some time