Declare missing values of a variable for a predefined range

ksl

Hello there,
I'm quiet new to Rapidminer and I know, this is a simple Question.
Is there way set the range of a Variable to missing? E.g. if a numeric Variable is negative (or it's values are above/below a specific value) such as: "if Var < 0 set value to missing"?
I just use the GUI.

Andrew2

Hello

Here's a previous thread that might help

http://rapid-i.com/rapidforum/index.php/topic,3002.0.html

regards

Andrew