Also, if you are using AEMaaCS then this bug has been fixed in July release and dates can be compared using rule editor: https://experienceleague.adobe.com/en/docs/experience-manager-cloud-service/content/release-notes/maintenance/2024/2024-7-0#:~:text=The%20%E2%80%9CIs%20After%E2%80%9D%20and%20%E2%...

Hi, code-editor feature in rule-editor is enabled for user if the user is a member of forms-script-writers group or af-template-script-writers group. Else code-editor feature in rule-editor is disabled for the non-admin user.Also, you can give access/revoke access to rule-editor itself by following:...

Ability to pass fields in parameters and modify field properties of core-components based form inside custom functions will be available in future release of AEMaaCS.

I would suggest using 'is changed' rule on text box as well. You can create a rule like 'When textBox is changed then Invoke Service'. It will trigger when focus will go out of the field. It would be more efficient then making multiple requests.In invoke service statement set value of a hidden field...