Volt Documentation

Sets a constant in a function at the specified index.

Syntax

debug.setconstant(func: function | number, index: number, value: any) -> void

Parameters

Parameter	Type	Description
`func`	`function` or `number`	The function or stack level
`index`	`number`	The constant index (1-based)
`value`	`any`	The new value for the constant

Returns

This function does not return a value.

Description

debug.setconstant modifies a constant value in a function's bytecode. This allows you to change literal values that the function uses.

Example

local function greet()
    return "Hello, World!"
end

print(greet()) -- "Hello, World!"

-- Find and change the string constant
local constants = debug.getconstants(greet)
for i, v in pairs(constants) do
    if v == "Hello, World!" then
        debug.setconstant(greet, i, "Goodbye, World!")
        break
    end
end

print(greet()) -- "Goodbye, World!"

Caution

Modifying constants can cause unexpected behavior if:

The constant is used in multiple places
You set an incompatible type
The bytecode expects a specific value

Use Cases

Patching: Change hardcoded values in game scripts
Testing: Modify behavior without changing source
Bypasses: Alter check values

debug.getconstant - Get a constant
debug.getconstants - Get all constants

debug.setconstant

On this page