WebDirect Privilege Sets

Dear all, 

I am relatively new to FileMaker and I would like to ask for help.

I developed a database that I uploaded in WebDirect.

I used custom privilege set to restrict my users from seeing data, they are not supposed to access.

However, I want to allow them performing find based on all available records and display only a Summary field - like average for example. In order to do that I made a script which performs find in a separate window and I used the following condition in the privilege set:

If ( Get ( WindowName ) = "Search" ; 1 ; User = Get ( AccountName ) )

In FM13 it works, but in WebDirect it does not function.

Do you have any suggestions?

Thank you in advance.