Unable to Set above 2038 Year in Contact CO field

Summary:

Unable to Set Contact CO date field above the year 2038

Content (required):

I am trying to set a date above the year of 2038 like 01/01/2040 and it won't allow me to set from Customer Portal. Is there any restriction or any modification needed to make it work. Please guide me to solve this issue

Note. In Agent Desktop the max value of that field is 01/01/2100

Version (include the version you are using, if applicable):

CP Framework Version 3.7

Code Snippet (add any code snippets that support your topic, if applicable):

$contact_id = 1;

$contact = RNCPHP\CO\Contact::fetch($contact_id);

$contact->CustomFields->CO->testDate = date('d-m-Y',strtotime('2040-01-19 01:23:42'));