Hi,
I am a developer for a store, and I was wondering if there is a way to modify the attributes of a customer account. Specifically, during account creation, I want customers to have the choice to optionally input the month and day of their birth. Additionally, I was wondering if there was any way to check how many days an account has existed using Liquid. I want to implement special messages to be sent on the anniversary of the account creation as well as the customer’s birthday (if they chose to disclose the information), and I was having trouble finding any way to implement this.
So far, in customer/register.liquid, I have this for finding the date of birth:
{{ ‘customer.register.date_of_birth’ | t }}
The main issues are:
- When the code is ran, there is no label title for the date selector, so it is unclear what the query is asking
- The date selector that is built into Shopify asks for month/day/year when I only want to ask and store the information for month/day
- This currently stores the information as a note, and I could not find any documentation in Liquid that allows me to interpret customer notes within the code, so the data is essentially useless
Below, I have included what the account creation menu looks like, as well as what the Date of Birth information looks like in the customer account details
If any of you have a solution to any or all of my issues, your help would be greatly appreciated!

