[Home](./index.md) > [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) > [ExecutionParams](./kibana-plugin-plugins-expressions-server.executionparams.md) > [expression](./kibana-plugin-plugins-expressions-server.executionparams.expression.md) ## ExecutionParams.expression property Signature: ```typescript expression?: string; ```