[Home](./index.md) > [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) > [ReactExpressionRendererProps](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md) > [onEvent](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.onevent.md) ## ReactExpressionRendererProps.onEvent property Signature: ```typescript onEvent?: (event: ExpressionRendererEvent) => void; ```