title: Replacing multiple lines with regular expressions in NP++
body: <p>I have a problem with using regexps in Notepad++.
  Simply - I don't how to make my own expression, which will do something like that:
  It has to change these lines</p>
  
  <pre><code>AAA BBB 433
  BBB CCC 45
  JJJ KK 23
  </code></pre>
  
  <p>and so on, to those lines:</p>
  
  <pre><code>AAA BBB 1
  BBB CCC 1
  JJJ KK 1
  </code></pre>
  
  <p>All in all - I want to change value in the last column (columns are separated with space) to a value '1'. 
  But I can't make a valid formula to do that.
  Please help me.</p>