If you decide to change the name of your gallery, then all of its components and widgets should be connected my this same name. Just as you add the name to other thumbnail widgets, you will also do so with your text frame Tooltip Name.
- Select the text frame.
- Select the Hyperlinks tab to open the Tooltip panel.
- Replace the Gallery1 part of the Tooltip name with the name of your gallery exactly as it appears in your Container Gallery Name. For example, if your gallery name was AboutPhotos then your gallery text frames Tooltip Names should be Lightbox_AboutPhotos and Thumbnail_AboutPhotos. You need only to rename the Tooltip Name.