# Changing the Local Engine Option

You can configure Spotfire Analyst to use the TERR engine that is installed in your organization's Spotfire Statistics Services deployment.

## Before you begin

Remember that you must have the same package version on your local installation and on the server. See your organization's package curator for help.

## About this task

You can use Spotfire Statistics Services in deployments where web client users access Spotfire analyses. Changing from the local TERR engine to the one on Spotfire Statistics Services is useful for testing the analyses the Spotfire web client users access.

## Procedure

1. In Spotfire Analyst, click Tools > Options.
2. In the left pane, scroll down and select Data Functions.
3. In the Data Functions pane, select Custom URL, and then provide the URL to the Spotfire Statistics Services (for example, http://CoStatsSrvcs:8080/TERRServer).
4. Clear the checkbox Use locally installed Spotfire Enterprise Runtime for R, and then click OK to accept.
   Note: The following advanced analytic tools available in the Spotfire Analyst installation always use the local engine, regardless of this setting.
   - Classification modeling.
   - Regression modeling (linear regression or regression tree).