Formula field or Auto-update field do not trigger Workflow Rule
In my project, on an object I have two fields. One is an auto-update and other is a formula field. Auto-update field contains 'Current Date' value ( 'TODAY()' ). Formula field is number type, calculating difference in days between a custom DATE field and above auto-update DATE field.
I am trying to trigger, a workflow rule that will fire when value of formula field would be 30 or 60.
Please help me out as the workflow is not getting triggered when the above formula evaluates to true.
Thank you in advance.