How can i create a custom alert when an Employee has a New Hire Life Event open?

Summary:

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Our clients want to send Employees reminders when they have an Open Life event like "New Hire". I'm trying to leverage the existing Open Enrollment reminder as I had seen in few projects before

I need to know what should be given as parameters

${LifeEventName} = 'New Hire'

${LifeEventOccuredDate} =' '

For the ${LifeEventOccuredDate}, I need to give Current date - 30 days , May I know can build this expression so that any employee with an Open New hire Life event will be processed and sent an alert.

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