---
title: results - any, unknown, none and multiple results
summary: any is a contract-dependent value; unknown means the contract has not been established. These are not Lua type() results. none and C void have no direct return, but effects and output parameters may exist.
section: reference
kind: guide
status: reference
updated: 2026-10-26
tags: ["API","X4"]
sources: ["https://wiki.egosoft.com/X4%20Foundations%20Wiki/Modding%20Support/","https://www.lua.org/manual/5.1/manual.html","https://luajit.org/ext_ffi_api.html"]
---
## Meaning

any is a contract-dependent value; unknown means the contract has not been established. These are not Lua type() results. none and C void have no direct return, but effects and output parameters may exist.

## Example

```lua
local ok, result = pcall(function() return 7 end)
-- boolean, then the function results on success.
```

**What happens:** ok = true, result = 7.

This fragment does not print or write a log message. The values shown are the expected results of the example.

## Methods and related calls

[API reference](wiki:api-index).