[Delphi] No dir listing after pre list event?

[St0rm]

I wrote a program in delphi that is triggered on the pre list event:

[FTP_Pre-Command_Events]
list = EXEC C:\test\test.exe

begin
  writeln('test123')
end.

All the script does is output a string to the client's window. So when a user goes into a dir, the string shows up, but no dir listing is received:

[R] test123
[R] 150 Opening ASCII mode data connection for directory listing.

And it just sits there, doing nothing. When I change the code a little bit:

begin
  writeln('!putlog test123')
end.

Now it works fine. test123 is written to log and a dir listing is received. Kinda weird, right?

Any suggestions?

[Harm]

I guess LIST is cancelled if you return non-zero.
Try to force 0 as the exit code.

[St0rm]

Why would the first program not return zero and the second would?

[Mouton]

writeln('150-something')

you're confusing the ftp client...

[St0rm]

Works. Thx.