In the Code blocks, to create a variable, start from clicking “Make variable” button in the Data Panel on the right.
Then Select the Data Type you need. In our case this type is String, that is the Text in programming.
Give the name to a variable (press Enter and it will be auto-generated).
Now you have two options: create a single variable, or collection. Collection contains single variables. Click Create and you are done.
As you created a variable, you can see it in the Data Panel on the right.
In the working area, right click on it and its properties will be opened. You can Set and Get the variable in the following way, too.