Hello there, @JCOM-Raph.
I can see the urgency of wanting to have the feature to add variables on invoices in QuickBooks Online (QBO). However, based on the latest update, it isn't available still. You'll want to visit the Customer Feedback page to check on updates regarding this feature moving forward. You can also go ahead and vote for this feature or submit your own request to be added to the list and get the latest updates through mail once available.
Here's how:
- Go to the Gear icon, and tap Feedback under Profile.
- Enter your comments and product suggestions then select Next.
- You'll be provided a list of suggested Help articles related to your comment. You can read through or Skip and send message.
- From the drop-down, choose a category then select Send message.
Additionally, changing a recurring transaction can be tricky, but allow me to add this article that you may use in the future: Edit a recurring template in QuickBooks Online.
If there's anything you need in managing your invoices, feel free to reply back on this thread. I'm always around to help. Have a great day!
