To add global variables to the project:
On the Define Input Types page, automatically define input types or click Let me enter input or global types directly.
The app displays a table of entry-point inputs.
To add a global variable, click Add global.
By default, the app names the first global variable in a project g,
and subsequent global variables g1, g2,
and so on.
Under Global variables, enter a name for the global variable.
After adding a global variable, but before generating code, specify its type and initial value. Otherwise, you must create a variable with the same name in the global workspace. See Specify Global Variable Type and Initial Value Using the App.