Hi!
Assuming you’re using a dataset to connect your gallery with a database I would suggest the following thing:
Save each item as a field of image + field of description.
Use the method ’ getCurrentItem ’ (gets the current item of the image) and use the data to pull the matching description.
Use a textbox with your desired design to display the description.
$w("#textElement").text = $w("#myDataset").getCurrentItem().description;
Hope it helps!
Doron.