Evaluate an expressionAdded in 8.9

POST 
/expression/evaluation

Strongly Consistent About endpoint data consistency

Evaluates a FEEL expression and returns the result. Supports references to tenant scoped cluster variables when a tenant ID is provided. Optionally, provide a scopeKey to make the variables of a specific process instance or element instance visible while evaluating the expression.

Required permissions

When authorization is enabled, this endpoint requires all of the following permissions. See resources and permissions to learn more.

Resource type	Permission
EXPRESSION	EVALUATE
Determined at runtime	When the expression is evaluated in the scope of a process instance (scopeKey resolves to an instance), additionally requires READ_PROCESS_INSTANCE on PROCESS_DEFINITION for that process. Skipped when unscoped.

Request

Responses

200

Expression evaluated successfully

400

The provided data is not valid.

401

The request lacks valid authentication credentials.

Response Headers

WWW-Authenticate

403

Forbidden. The request is not allowed.

500

An internal error occurred while processing the request.