Filter conditions value

[left]Can somebody tell us what’s wrong?[/left]
[left] [/left]
[left]We want the most recent file automatic downloaded from a server.[/left]
[left]Something is wrong in the configuration and we do not find a working solution. [/left]
[left]It seems like the filter value we use was incorrect or ignored.[/left]
[left] [/left]
[left]Bellow the configuration we used[/left]
option -> enable
filter -> include

edit conditions
property -> date modified
file type -> file
function -> equal
value -> () -1

somebody an idea?[/left]
[left]Please help us[/left]