[Home](./index.md) > [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) > [Execution](./kibana-plugin-plugins-expressions-server.execution.md) > [invokeFunction](./kibana-plugin-plugins-expressions-server.execution.invokefunction.md) ## Execution.invokeFunction() method Signature: ```typescript invokeFunction(fn: ExpressionFunction, input: unknown, args: Record): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | fn | ExpressionFunction | | | input | unknown | | | args | Record<string, unknown> | | Returns: `Promise`