New to Power Script

[Miriam Hawkins]

I am new to script Runner and I have a line of code that executes only if I select a specific issue key. I need this code to execute in an entire project. The code I am using is

if(!isNull(parent)) {
customfield_10315 = parent.summary;

How would I update this code to update an entire project?

[Nic Brough -Adaptavist-]

You would need to write the code so that it iterates over a set of issues.