How to trigger only new tickects?

This topic is regarding Zendesk jira integration

by using exalate
Scenario: Once I create a new connection will all code changes

I dont want the old tickets to get triggered in zendesk but i need only the new ones to be triggered
In trigger what script can i add so the old ones will not sync


I have used this, but here the old tickects are not getting synced but also the new ones created after that time also not getting synced