Like master variables, globals can be created and managed via the “Master Globals” feature. 

Globals track only a single value; each time it is updated, it overwrites the previous value and retains only the latest value. Once a master global is defined, it is automatically included in the definition, just as a master variable. 

Take a look at the simple master global UI, designed to make defining globals easier and more manageable. 

Add "variables and globals" by entering their names and selecting a data type. Remove variables and globals by selecting them from the list. Variables and globals have default values based on their data type. The Process Instances page lets you add and delete variables and globals.

• Variables and globals have '0' for the 'Number' data type
• Variables and globals have ' ' for the 'String' data type
• Variables and globals have 'Current date and time' for the 'Date' data type
• Variables and globals  have 'false' for the 'Boolean' data type

In the example below, a list of master globals is defined to be included in each new process definition created from now on.  

Create a new process definition as a sample. 

The process definition is created and displayed on the designer canvas. 

Select the Actions > Define Globals menu to view the “global variables” defined in this definition. 

To remove the master globals, select the item and click the “Remove” button. This global is not included in new definitions created henceforth, but it continues to exist in definitions that are already included.