[TYPO3-english] How can I get the number of pictures in a image-block?

[Christopher]

Hi guys,

if click-enlarge is enabled, I want to give every picture a title-tag.
At the moment I have got the following:

tt_content.image.20.1.titleText.cObject = COA
tt_content.image.20.1.titleText.cObject {
 20 = COA
 # Only if click-enlarge is active:
 20.if.isTrue.field = image_zoom
 20 {
  # If altText is empty:
  # Use standard-text as title-Tag.
  1 = TEXT
  1.if.isFalse.field = altText
  1.value = Click-enlarge me!
 }
}

The code works, but what I do not like about it is the following:
I get the text "Click-enlarge me!" in the title-tag only once.
So it only appears at the first image.
If I have more than one picture, I want it to be there too.

Is there a way to count the number of pictures attached and to add the tag 
that number of times?

 Christopher