# Use Business Formulas in a Digital Journey

After you configured a data set, a formula expression in the editor, and activated the formula, you can use the formula in a journey or entity form.

## Call Formulas in a form-driven flow (no code)

- Open FintechOS Studio, open the main menu and select
**Digital Experience**>**Customer Journeys**>**Form Driven Flows**. - Open the form driven flow you wish to work on.
- Select the
**Actions**tab, then click**Insert**. - Click
**Insert**and select the call formula with data mapping and select the formula you wish to execute and the mapping you have done. - Click ''
**Save**'' and then click ''**Save and reload**''. - Continue to add as any as you have or need.
- Open each step and add the action by clicking the
**'Flow control.** - In the section ''Actions to be performed'' add the action that calls the formula.
- Click
**Save and Reload**.

### Track form driven flows that are using a specific formula

After you configure a form driven flow to call a formula, the form will be listed in the Form Tracking tab of the formula's edit form.

## Call formulas using server side scripts

Formulas can be called from server side scripts using the following method:

Copy

`/**`

* Call formula by name

* @param formulaName is the name of the formula

* @param input is the input that must be provided in order to compute the formula

* @param options are the formula runtime options of type IFtosRunFormulaOption. A property that can be set here is referenceDate if you need to call a past version of the formula

* @return the object with the calculated values

*/

server.formulas.runFormula(formulaName: string, input: any, options: any): any

Example

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`var input = {`

age: 20,

region: "test"

}

server.formulas.runFormula("formulaName", input, {});

For more information, see the Server SDK Reference Guide.