A variable in Qlik Sense is a container storing a static value or a calculation, for example a numeric or alphanumeric value. When you use the variable in the app, any change made to the variable is applied everywhere the variable is used. Variables are defined using the variables overview, or in the script using the data load editor, where the variable acquires its value from a Let, Set or other control statements in the data load script.
Tip noteWhen using variables in expressions, you can change the expression used in a range of charts simultaneously simply by editing the variable.