Can't encrypt data in a table

Hey,
I'm closely following the example in phprunner's help function, but I'm unable to encrypt existing data in a table.
I'm using the "encryption" option for a given field ( Enterprise version of phprunner ), and I add this code in the Before process event of the table :
include_once("ciphcoding.php");
After the page is visible, the data in the field is no longer visible (that's normal). Then I open this page in a new tab:
http://website.com/project/mytable_list.php?ciphcoding=1
What does the number 1 mean?????
After opening the page, I can update the records by pressing the "done" button, but to no avail. What am I doing wrong ?