Applescript for custom tags

Question

hi there,
has anyone had any experience with applescript and custom tags? i've gotten so far as to display the name of custom tags i've added, but i want to find a way to batch erase some i've added on several thousand pictures. any hints?
j
here's a snippet of the code i'm trying out. there must be some way to delete the tag, but i'm not fluent in applescript. the logic of the script has been copied off another one i've found somewhere on the net. the author is Steven Banick (http://banick.com)
repeat with countOfPhotos from 1 to the count of selectedPhotos
-- Get the photo's properties for the operation
set currentPhoto to item countOfPhotos of selectedPhotos
tell currentPhoto
-- Reset the variables in the loop
set the photoCustomTags to ""
-- Retrieve the Photo Metadata
set the photoCustomTags to the name of custom tags
-- Scan the individual custom Tags from the assigned Custom tags
repeat with currentcustomTag from 1 to count of photoCustomTags
set currentcustomTag to item currentcustomTag of photoCustomTags
-- ver quais são as custom tags e tentar apagá-las
if currentcustomTag = CustomTagName1 then
-- display dialog currentcustomTag
delete the item currentcustomTag

Answer 1

I'm not sure if you can delete tags, but you can certainly empty them:
tell application "Aperture"
set selectedImages to the selection
repeat with i from 1 to number of items in selectedImages
set this_item to item i of selectedImages
try
set value of custom tag "Image ID" of this_item to ""
end try
end repeat
end tell
Just change "Image ID" to the name of your custom tag, and make sure that you only use it on the correct images...
Ian