Template variable types

Variables are declared in a template as a list of up to 40 definitions.

{
  "key": "MAX_PLAYERS",
  "label": "Slots",
  "description": "How many players can join.",
  "type": "number",
  "min": 1,
  "max": 50,
  "userEditable": true,
  "required": true
}

Common fields

Field	Meaning
key	Environment variable name: capital letters, digits and underscores, starting with a letter or _, up to 64 characters. Unique per template
label	Shown in forms (up to 80 characters); defaults to the key
description	Help text (up to 300 characters)
type	string, number, boolean or select
userEditable	Whether owners may change it in the startup panel
required	A value must be present
secret	Hidden from everyone but administrators

Types

Type	Extra fields	Validation
string	pattern (regular expression, up to 200 characters, matched with a time limit)	Must match pattern when given
number	min, max	Must be a number within the range
boolean		true or false, shown as a switch
select	options: 1 to 60 of { "value", "label" }	Must be one of the values

Values are validated on the server every time they are saved; the form only helps. Names beginning with RCON_ or holding passwords are commonly marked secret. The legacy editableVariables list of names is still accepted and treated as plain editable text.