How to display the CONTACT ID in the Contact page

How to display the CONTACT ID in the Contact page

Hi,

I've seen this conversation below and it is exactly the same question I'm raising now, but unfortunately the last message is not solved

https://help.zoho.com/portal/community/topic/show-contact-id-while-editing-contact-form

I need to show the ContactId and I don't know how to do this.

The last message included in the conversaton shows the way but not it is not completed.

"I am sorry by default we do not have the option to show the record ID for the contacts in the field in a record. When you open a contact record or any record the record ID for the respective record will be appear in the URL. Though if you want the record ID to be displayed in a field in the respective records you can achieve this using custom functions. You have to create a custom single line field and please let us know if you want to update this custom field when the record is created and edited."


If I create a custom single line field how I assign the ContactID from ZOHO to this field.

Thanks