Hello, @Manuel_Germano
Changes to the Page Data trigger a re-render of the UI, which is not the most efficient approach. A better solution would be to create a custom function that contains the logic to save the list of organizations to the database and call this function directly when clicking the button inside the reusable component.
However, if this solution doesn’t fit your needs and you require a workaround, you can consider the following approach involving the visibility of a block: Trigger event via changes in Page Data
If you run into any difficulties with implementing the workaround, feel free to reach out.
Regards,
Serhiy