you have your regex in the debug input. you need to move it to "default" or enter your own regex at run time. if it will never change just put the regex into the filter module instead of linking the input box.
Thanks for your prompt response but it actually doesn't work :(
I can't use the filter module because I need to filter more than 10 keywords (approx 300 keywords).
I did what you say but even in "default", the pipe show results in the debugger mode but not when i'm running the pipe :(