# Calling the Business Formulas

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.

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

- Open FintechOS Studio, open the main menu and select
**Digital Journey**. - Open the digital journey you wish to work on.
- Click on
**7. Actions**, then click on the ''**Insert**'' button. - Click on + and select the call formula with data mapping and select the formula you wish to execute and he 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 ''3. Flow control''.
- In the section ''Actions to be performed'' add the action that calls the formula.
- Click the
**Save and Reload**button.

### 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:

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`/**`

* 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.