Merge 2 fields from hubspot with random digits

I would like to generate customer codes from HUBSPOT fields. I have a workflow on HUBSPOT that sends a webhook to ZAPIER when the conditions are met. I would like, thanks to this webhook, to perform the following action: Customer code = 5 characters of the name without accent or space + same for the first name + 2 random digits. I look at the side of zapier's javascript function to try to do that, but I'm a bit in trouble. Can you help me and tell me if this is possible?