[Home](./index.md) > [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) > [Executor](./kibana-plugin-plugins-expressions-server.executor.md) > [createExecution](./kibana-plugin-plugins-expressions-server.executor.createexecution.md) ## Executor.createExecution() method Signature: ```typescript createExecution(ast: string | ExpressionAstExpression, params?: ExpressionExecutionParams): Execution; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | ast | string | ExpressionAstExpression | | | params | ExpressionExecutionParams | | Returns: `Execution`