Expressions

The Expression Engine settings control JavaScript evaluation behavior, including imports, eval() usage, timeouts, and environment variable access.

Setting	JSON Property	Description
Allow Expression Imports	settings.expressionEngine.allowExpressionImports	Specifies if the hub will allow the use of 3^rd^-party JavaScript imports in instance, condition, or trigger expressions. See Expressions for more details.
Allow eval()	settings.expressionEngine.allowExpressionEval	Specifies whether or not the use of eval() is allowed during javascript evaluation. This setting applies to all expression fields and imported libraries
Allow Environment References	settings.expressionEngine.allowEnvironmentVariables	Specifies if the hub can resolve environment variable references. If disabled {{System.Environment}} references will not be resolved and will not be available from the reference panel. The default setting is False. See Environment Variables for more information.
Expression Engine Timeout (seconds)	settings.expressionEngine.expressionEngineTimeoutSeconds	Specifies the maximum amount of time an expression can take to compute a result. The valid range is 1-30 seconds. If this setting is not specified, a value of 10 seconds is used. If this setting is out-of-range, the setting will be set to the closest acceptable value.
Hub Binding Name	settings.expressionEngine.hubBindingName	Specifies the name of the internal JavaScript object used in the expression engine to provide access to metadata like Quality. This only needs to be changed if importing a JS library that may have a naming conflict, which should be rare.