--- title: Constructing Expressions slug: tracker-en/constructing-expressions description: Learn how to create business rules in a Flow with this comprehensive document. Explore the various actions you can perform, like including, changing, and deleting expressions. Access and use the functionality effortlessly with the step-by-step procedure p createdAt: 2021-10-05T18:21:53.000Z --- This functionality can be used to create business rules that will be associated to the Flow. This feature provides various actions, such as **including, changing and deleting expressions**. ## What are the expressions? **Expressions **are resources used in system flows to **allow the construction of various scenarios, in addition, expressions can also be used to configure different states of a service flow**. ## Procedure 1. Access the functionality through the main menu `Workflow > Expressions`; 2. To import expressions from another system, click on "**Import**"; 3. To export expressions from another system, click on "**Export**"; 4. Click on "**New**" and select the type of expression; 5. Each type of expression opens a screen with different fields; 6. Click on "**Save**".