---
title: xs:unsignedInt - X4 schema type
summary: xs:unsignedInt: An unsigned 32-bit XML Schema integer from 0 to 4294967295.
section: reference
kind: guide
status: reference
updated: 2026-10-27
tags: ["XSD","schema","types"]
sources: ["https://wiki.egosoft.com/X4%20Foundations%20Wiki/Modding%20Support/","https://www.w3.org/TR/xmlschema11-2/"]
---
## Meaning

xs:unsignedInt: An unsigned 32-bit XML Schema integer from 0 to 4294967295.

An XSD type constrains XML, rather than declaring a Lua return or the payload type of event.param. A valid schema value does not prove a successful game effect.

## Schema structure

`W3C XML Schema`

| Property | Value |
| --- | --- |
| Construction | `builtin` |
| Base type | [`xs:nonNegativeInteger`](wiki:schema-xs-nonnegativeinteger-bbdb0370) |

| Constraint | Value |
| --- | --- |
| `minInclusive` | `0` |
| `maxInclusive` | `4294967295` |

restriction narrows a base type; union accepts one of its branches; list describes whitespace-separated items. Enumeration values in one restriction are alternatives. Pattern syntax is XML Schema regex, not Lua patterns or JavaScript RegExp. Constraints inherited from the base type still apply.

## Example and result

```text
0
```

**What happens:** 0 is valid; -1 is not. An attribute can impose further restrictions.

Object and group variables must already exist in the correct MD / AI context. These are learning fragments, not a complete runnable mission.

## Used by

| Element | Attribute | Schema |
| --- | --- | --- |
| [`level`](wiki:api-md-level-f1dfe606) | `value` | `libraries/parameters.xsd` |
| [`plot`](wiki:api-md-plot-76ae4124) | `baseprice` | `libraries/parameters.xsd` |


[All schema types](wiki:schema-types) · [Lua / MD value types](wiki:types)