Referring Variables 
Once declared, global variables can be simply referred across any other stage using the
following syntax:

<%variable%>For example, once the global variable “30_days_to_expiry_certs” is declared in the Script task, it can be referenced anywhere in the workflow as
<%30_days_to_expiry_certs%>

Note: Use keyboard shortcut Ctrl+g to view and refer
global variables within a Script task.
