[Zope] how can i the height of a image

[Alain Barbason]

hi,

in a file  index_html, I search to have the height of a image, but this,
is in a subdirectroy called "images"

After a request of a database, I have the name of the image in a
variable "nom"

if I write

< dtml-var expr='images.'+nom+'.height' > the result is

   images.x0y0.height

(x0y0 is the name of my image,)

if I write

< dtml-var expr='images.x0y0.height' > the result is

    275

ok, it's the height of my image

how to make to have the first sentence, but with the result is "275" ?

thank

- - --
by AlainBB
http://www.barbason.be