proftpd permission for subdirectory

I've this setting in my .conf file

<Limit LOGIN>
Order deny,allow
AllowUser pupapa
</Limit>

<Directory /home/htdocs/*>
<Limit DIRS>
AllowAll
</Limit>
<Limit READ WRITE>
Order deny,allow
AllowUser pupapa
</Limit>
</Directory>

However, the user pupapa cannot upload files to subdirectory of "/home/htdocs/" althought I've specified a '*' under "/home/htdocs/"

It can't even upload to directory "/home/htdocs/" if there is subdirectory underneath it. If there is no subdirectory, then upload is successful. I can't understand how it works. All I want is if a user has permission to a specified directory, he/she should have access to all subdirectories. How ?

Currently, I've a few subdirectories under "/home/htdocs/":

"/home/htdocs/web"
"/home/htdocs/web/images"
"/home/htdocs/docs"

etc.....