# Variables ### In Models: Variables are defined at Model-level so that they can be used in any expression that is being created at the Mode-level. The list of all the variables defined for the Model is available in the variables section. You can edit/delete/add new variables to the list. #### How to create variables in models * Model -> Expressions Tab -> Expressions * Click on add Expression. * The expression box can be used to define a dimension/measure expression * Variables can be created by clicking on add variable button. * You can see the output in the preview box after clicking on the “**Validate**” button. It shows the output of the expression applied on the first 5 rows of data. **Model -> Expressions Tab -> Variables:** * You can create new variables here(as shown below). This section also shows all the defined variables at the Model level, along with options to make edits and delete variables. * A variable defined in the variable section becomes a **global variable** in the context of that model, meaning that the variables can be used within any of the expressions in the same Model.

### **In Reports** The **run-time value** of the variables defined at the model level can be edited on the Reports-Edit Tab to get the desired output. **In edit view:** * The created variables can be seen in the left-hand side panel, where you can now find a tab with a variable icon along with Dimension and measure tabs. * On Clicking the **Edit icon** on the created dimension/measure or the **Variable icon**, the **variable section** opens up. * The value of the variable can be controlled in real-time (as shown below). The value edited and saved **only applies to the Report** and *does not override* the default value of the variable at the Model level.