[Home](./index.md) > [@firebase/analytics](./analytics.md) > [setUserProperties](./analytics.setuserproperties.md) ## setUserProperties() function Use gtag 'config' command to set all params specified. Signature: ```typescript export declare function setUserProperties(analyticsInstance: Analytics, properties: CustomParams, options?: AnalyticsCallOptions): void; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | analyticsInstance | [Analytics](./analytics.analytics.md) | | | properties | [CustomParams](./analytics.customparams.md) | | | options | [AnalyticsCallOptions](./analytics.analyticscalloptions.md) | | Returns: void