Groovy script to add child options to a parent option for a cascading field

[Anshu Raina]

I need groovy script help to add child values for a parent value given in a cascading field in Jira.

Say I have following requirement:

Parent Option: A

Child Options: a, aa, aaa

Have Parent Option A already in the system, just that I need help with adding a, aa, aaa to A using a groovy script.

Any suggestions on this?