I have a custom field called Delta ID. Some of the user stories will have same ID
Foe Example
ON-1243 will have Delta ID 51
ON-2341 will have Delta ID 51
ON-1687 will have Delta ID 51
ON-3456 will not have Delta ID
ON-2367 will have Delta ID 60
ON-1234 will not have Delta ID.
Now I need the count as 4 (User story with Delta ID 51+ 2(User story without Delta ID)+ User Story with Delta ID 60)
Now I need a gadget that will display the count of User story with Distinct Delta ID.
Suggest me a way to do this