Check date in custom field and make calculation - help needed!

Question

For one of my clients we collect their baby’s date of birth as a custom field in Manychat so that we can send them age-relevant information.

We now want to improve this automation by following up with access to an age-related baby sleep masterclass.

So I want to check we have the Baby’s DOB via a condition and then calculate the current time from this date. ie if Baby’s DOB is June 1 2025 - we’d send them to one type of masterclass as they’d be 5+ months old. But if their DOB was September 1 2025, they’d only be 2 months old so more relevant for a different masterclass.

I’m struggling with how to make that calculation - is it even possible? Thx

Mel E · Answer

OK - I think I’ve figured it out using the offset. If any hive mind can check my thinking here, I’d hugely appreciate it! User enters flow, flow sets user field to current time to date of the action, then a condition checks that the current time is ‘offset’ 90 days after the DOB custom field.

This seems to work - does it make sense?!

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