Automating Filezilla using Applescript

Hi,

I am trying to automate the file downloading (no uploading) of FileZilla using Applescript.
I would normally go to FilZilla>File>Site Manager. Select my site (whose specs are already saved under a name in the left side of the window) and hit connect.

While trying to implement this in Applescript, I am trying 2 approaches..
1) Open the URL path "ftp://username.password/ftp.example.com/directory"
Then try to copy all sub-folders in this folder to my destination folder.
The problems I face here are:
a) The code does not work if I take a user input, but works when I put in the name of the directory directly in the URL.
b) I cannot copy the folders from the remote site to my local directory. It just opens up the ftp path and shows all the sub-folders to be downloaded.

I am trying the duplicate and copy commands. Is it that I do not have permission to carry out the copy?
When I try to manually select all folders and copy them, it copies them perfectly.

2) The second approach is to mimic the process by opening FileZilla, choosing menu File<Site Manager and then connecting.
Here, my Applescript works until opening Site Manager. From there, I am not able to figure out how to select my previously saved site from the left of the window.
I use something like
tell app "System Events"
click menu item "Site Manager" of ((process "FileZilla)'s menu.....so on



Hope my post is not confusing and kindly help.

Regards.