Pentaho Filter Regexp Excel Input
<p>Ok, so what I'm trying to do now is take all the information off an Excel Input (all String columns), and then of these columns I want to make an specific filter for one of them, more specific on column NO_BIEN, this specific expression.</p>

<p><strong>[0-9]+(.[0-9][0-9]?)?</strong></p>

<p>I make a Filter Rows operation and click on the REGEXP filter but I don't see where can I paste the expression because all I can see if to add a String. </p>

<p><a href="https://i.stack.imgur.com/8zT4u.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8zT4u.png" alt="Filter rows screen"></a></p>