This script takes a JQL query as a parameter that should be a list of epics and returns issues where the custom field (second parameter) does not match the value of the epic.
Example Usage (JQL query)
key in silJQLList("silJql_FieldValueDosentMatchEpic.sil", "Project = EX and type = Epic", "Fruit")
Script
string [] epics = selectIssues(argv[0]); string matchField = argv[1]; string [] ret; for(string e in epics) { for(string i in allLinkedIssues(e, "Epic-Story Link")) { if(%i%.%matchField% != %e%.%matchField%) { ret += i; } } } return ret;