[Home](./index.md) > [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) > [ExpressionFunction](./kibana-plugin-plugins-expressions-server.expressionfunction.md) > [telemetry](./kibana-plugin-plugins-expressions-server.expressionfunction.telemetry.md) ## ExpressionFunction.telemetry property Signature: ```typescript telemetry: (state: ExpressionAstFunction['arguments'], telemetryData: Record) => Record; ```