Assistance Needed – How to Correctly Map “Subscriber ID” in Manychat Module (Make.com Integration)

Hello everyone,

I am currently building an automation in Make.com that updates a user’s custom field in Manychat after verifying their payment status from Google Sheets. The scenario works as follows:

1. Google Sheets – Watch Changes → detects updated payment status.

2. Set Multiple Variables → prepares reservation/payment data.

3. Google Sheets – Update Row → writes reservation code or status back into the sheet.

4. Manychat – Set a Custom Field → should update a custom field inside Manychat for the corresponding Instagram user.

The issue I am facing relates to the “Subscriber ID” input in the Manychat: Set a Custom Field module.

Problem:

Make.com requires a numeric Subscriber ID (matching the pattern /^[0-9]+$/), but in my scenario I only have the user’s Instagram ID/Username that is stored in Google Sheets.
I am not sure:

• Which Manychat field corresponds to this numeric Subscriber ID?

• How to correctly map or retrieve the Subscriber ID for Instagram users coming from Manychat?

• Whether I need to add an additional module (e.g., “Get Subscriber by Custom Field”) before updating the custom field.

My Question:

Could you please clarify how I should fill or map the “Subscriber ID” field in this module when working with Instagram automations?

Specifically:

• What is the correct way to obtain the numeric Manychat Subscriber ID for an Instagram user?

• Is there any recommended method in Make.com to look up a subscriber using their Instagram ID or custom field before updating custom fields?

Any guidance or example mapping would be greatly appreciated.

Thank you in advance!