Using Oracle data masking

Hi,

1- While using the masking pack after defining the mask format we generate the masking script (see the attached picture image2) , my question is : since we can save this script into disk and run it manually, can we modify it in order to call external procedures such as dll ? or this will not work ?

2- while defining the masks the option "User Defined Function " can allow calling the external procs?

3- is it possible to download external masks libraries (eg from dll ) using the mask definition interface (see the list used in the image1) ?

Note: I ask this questions because at this moment i've no way to test it, i contacted yesterday the Oracle customer service (CSR) and they told me that there is no trial version .