How do I save a value into a custom field in JIRA programmatically?

Question

I\'ve spent days trying to find out how to save or update a value into a CustomField programmatically and finally found out how it\'s done. So I\'ll make this a question an

Answer 1

Ok, this is how I'm successfully updating and saving the CustomField value into the JIRA db.

Comments welcome...

private void saveValue(MutableIssue issue, String valueToSave, CustomField
        customField) throws FieldLayoutStorageException {

    issue.setCustomFieldValue(customField, valueToSave);

    Map modifiedFields = issue.getModifiedFields();

    FieldLayoutItem fieldLayoutItem =
    ComponentManager.getInstance().getFieldLayoutManager().getFieldLayout(issue).getFieldLayoutItem(
            customField);

    DefaultIssueChangeHolder issueChangeHolder = new DefaultIssueChangeHolder();

    final ModifiedValue modifiedValue = (ModifiedValue) modifiedFields.get(customField.getId());

    customField.updateValue(fieldLayoutItem, issue, modifiedValue, issueChangeHolder);
}