I'm trying to send our leads' conversion events from Zoho CRM to Meta system in order to measure our advertising channels' performance and do optimization accordingly, it can be simply done by using the workflow to trigger a webhook post action, however there is a small difference between the parameter specifications between Meta and Zoho, according to Meta's description, I have to send the 'event time' by using unix timestamp fromat in seconds but the Zoho webhook only provides the feature to transform date-time to timestamp in milliseconds if I use the 'Form-Data'->'Module Parameters'. 

However I noticed that there is another option 'User Defined Format', is there a way to transform the date-time to Unix timestamp in seconds by using this option?