Create Variables from a Tool or Microdialog
Click f(x) in a tool or microdialog to create or assign a variable.
- 
                In the tool or the tool’s microdialog, click the f(x)
                    icon.
                Figure 1. Example of a microdialog with a variable field  
 Figure 2. Example of a tool with a variable field  
 
- 
                In the dropdown menu, select Create Variable to create a
                    new variable based on the type in the text field, or select the name of an
                    existing similar type variable to assign it. 
 
Tip: 
                
        - You can also create a variable by entering a new name and expression in the
                        microdialog’s text field, for example: Variable1=50
- In addition, you can also create a new variable based on an existing
                        variable, for example, Variable2=Variable1*0.5.