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This event is fired when any script calls the BindableEvent/Fire method is called, using the same arguments as parameters.

Parameter Limitations

Any type of Roblox object such as an Enumeration, Instance, or userdata can be passed as a parameter when a RemoteEvent is fired or a RemoteFunction invoked. Lua types such as numbers, strings, and booleans can also be passed, although there are some limitations on how data can be passed.

Mixed Tables

If a Table is passed as an argument to a BindableEvent it must be an array without missing entries or have string keys, not a mixture, or else the string keys will be lost.

Avoid passing a mixed table (some values indexed by number and others by key), as only the data indexed by number will be passed. For example, when the server receives the colorData table illustrated below, it only sees indices 1 and 2 containing "Blue" and "Yellow" while the other data is lost in the transfer. Note, however, that sub-tables do not need to be indexed in the same way as their parent — in other words, as long as each individual sub-table is indexed with the same type, all of the data is preserved.

Metatables are not preserved.

Non-String Indices

If any indices of a passed table are non-string type (Instance, userdata, function, another table, etc.), those indices will be converted to a string.

-- Mixed table
local colorData = {}
colorData[1] = "Blue"
colorData[2] = "Yellow"
colorData["Color1"] = "Green"
colorData["Color2"] = "Red"

-- Table with two key-indexed sub-tables
local playerData = {}
playerData["CharData"] = {
	-- All children indexed by key
	CharName = "Diva Dragonslayer",
	CharClass = "Knight"
playerData["Inventory"] = {
	-- All children numerically indexed


Functions passed as parameters will not be replicated, therefore making it impossible to use these objects to pass functions between scripts.


Name Type Default Description

The arguments provided when the event is fired

Code Samples

BindableEvent Hello World

This code sample defines and connects a simple function to a BindableEvent. It then fires the BindableEvent, which in turn calls the connected function. It prints “Hello, world”. Test this script by pasting it into a BindableEvent within the Workspace or ServerScriptService.