How to Set Up a Google Sheets Button to Trigger a Parabola Flow

Use this guide to add a button in Google Sheets that triggers a Parabola flow via webhook.

Prerequisites

A Parabola flow with a webhook trigger enabled
A Google Sheet where you want the button

Step-by-step setup

Get your Parabola webhook URL

Open your Parabola flow
Click the lightning bolt icon (triggers)
Toggle on Webhooks
Copy the generated webhook URL
Make sure the flow is turned on

Add the Apps Script

Open your Google Sheet
Go to Extensions > Apps Script
Delete any boilerplate code in Code.gs
Paste this code:

function triggerParabolaFlow() {
  var url = "PASTE_YOUR_WEBHOOK_URL_HERE";
  UrlFetchApp.fetch(url, { method: "post", muteHttpExceptions: true });
  SpreadsheetApp.getActiveSpreadsheet().toast("Flow triggered!", "Parabola", 3);
}

Replace PASTE_YOUR_WEBHOOK_URL_HERE with your webhook URL
Press Ctrl+S to save

Import the macro

Go back to your Google Sheet
Click Extensions > Macros > Import macros
Find triggerParabolaFlow and click Add function

Create the button

Go to Insert > Drawing
Create a shape and add text like “Run Parabola Flow”
Click Save and Close

Assign the script

Single click the drawing
Click the three dots menu in the top-right corner
Select Assign script
Type exactly: triggerParabolaFlow
Click OK

Authorize the script

The first click will prompt authorization. Click Continue, select your account, and click Allow. If you see an “unverified app” warning, click Advanced > Go to [project name].

Troubleshooting

Issue	Solution
”Script function could not be found”	Import the macro via Extensions > Macros > Import macros
Toast error about null	Run the script from the sheet button, not the Apps Script editor
Flow doesn’t run	Make sure the flow is turned on in Parabola

Last modified on April 9, 2026

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How to Set Up a Google Sheets Button to Trigger a Parabola Flow

Prerequisites

Step-by-step setup

Troubleshooting

​Prerequisites

​Step-by-step setup

​Troubleshooting

Prerequisites

Step-by-step setup

Troubleshooting