Automatic batch number in beas

Good afternoon everyone, I would like to ask for your collaboration to know how I can automatically enter the batch number in Beas. This is composed of the day of the year plus the current year. For example, today's batch, April 7, 2025, would be 972025. I thank you in advance for your support with this question. I have no experience writing Beas scripts, but I am from the IT area.