[opencms-dev] How to list files from a folder in opencms?

[mihai lacusteanu]

I need to create a new resource type in opencms which have 1 field. The
field is for a target folder.
Every time I select a folder from VFS and save the resource(xml) the
formatter will render a the list of files from the specified folder.

I managed to create a jsp file which will create the list of files needed,
but only with the target folder hardcoded. I don't know how to read data
from the resource type(xml), which I can access using el expression.
Can you help me?
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