I have 15 custom fields added as radio buttons for a Review Checklist.
The custom field reads "Is it verified that the tasks do not directly execute code nor access data that belongs to a different task?" for example. The custom field on the View Issue Screen appears as below.

I would like to increase the width of the custom field. I tried Workaround 2 from the below link:
https://confluence.atlassian.com/jirakb/custom-field-width-less-than-available-options-length-240912344.html
By changing the customfield ID to my customfield ID and pasting in Description field of the custom field Edit page.
But jira just hangs. I tried some other script from other resolutions provided too but none seems to be working.
Please advise. What am I doing wrong?