Hi.
The listbuilder code is almost the same as the one in the development tutorial(my first package). Unfortunately, when I insert the code in the posting, the code gets parsed by forums and you get to see the image, not the code. Strange.
Say an element of the list contains the path to the file we want to show and I just wanted to show the thumbnail of every file in the list. That was my problem.
Now it works thanks to Claudio's solution.
List builder is so cool but complicated and since I'm learning this stuff now, I get confused.
Thanks for all the help to everyone by the way.