How to sum of two values of a same custom field with different issues?

[Saad]

Hi, I just want to ask how to do smart values operation with two values of a same custom field with different issues?

To be clear I created an automation rule that depends on adding two values of a same custom field with different issues.

Thank you

[John Funk]

Hi Saad,

What is the relationship between the two issues? 

[Chris Buzon]

Using Jira Automation --

Issuelookup action that returns the tickets you need (only those 2, or you'll end up getting more than you wanted) -> Then Pass the values of the fields you need into variables inside the rule (can be done a few ways - like using advanced branching and creating variables action).

Then create an action that adds the variable-values together, and does something with them, such as adding that value to a field, commenting on it, etc.  Since the variables only exist inside that rule, you'll need to put that info somewhere.