Jira IssuePanel get custom field value without being asked for permission?

Hi,

I have an issuePanel and need to check a custom field condition to decide what the issuePanel should show. Currently I load the issue field values by using api.asUser().requestJira but then I get asked to give the permission to do that. This is really bad. The user has still the right to see the issue, otherwise he/she wouldn’t see the issuePanel.

Is there a way to get the issues value without using the REST Api, to avoid the permission question?

Thanks in advance
Frank