Hello, I have a gallery with checkboxes, and I have a SharePoint list has a column called "MultipleITItems". I want to make it so that all the checkboxes uncheck by making the SharePoint list "MultipleITItems" set to false. However, I can't get all the items to be patched to false. Below is images for better understanding.

In the image above I have a checkbox that when I check it, it shows on another gallery. I want to set it so that when I click next it unchecks the boxes and sets the sharepoint list column "MultipleITItems" to false.

Above is the SharePoint list. As you can see, I want to make all the fields for the column "MultipleITItems" (not just one) set to false when I click the "Next" button from the first image. It should also uncheck the boxes in the first image, which should happen automatically since I have the default of the checkbox to "MultipleITItems". Any help would be appreciated. Thanks