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Update Attribute Value

PATCH /Events/{eventId}/attributes/{attributeId}

PATCH/Events/{eventId}/attributes/{attributeId}

Required Tokens

FieldTypeRequiredDescription
BearerAuthorization: Bearer <api-key>OptionalYour API key. Pass it as the Bearer token on every request.
Event tokenx-Event-TokenOptionalRun **Get Tokens** in the Authorization folder, or call `GET /Events/{eventId}/authorize` manually.

Upserts a single attribute value (one PATCH per field, fired on blur by the inline editor). For MultiSelect, value is a JSON array string of selected option values; for MultiFile, a JSON array string of {id,name} objects. Filling a task-tracked value advances its task.

Returns 200 OK.

Requires write access to the event.

Path Parameters

FieldTypeRequiredDescription
eventIdGuidRequiredThe event that owns the attribute value.
attributeIdGuidRequiredThe attribute to set the value for.

Request Body

FieldTypeRequiredDescription
valuestring?OptionalThe value to set. `null`/blank clears the value.