Open Page module prepend announcement

I have installed Open Page module 17.0.9 on FreePBX 17.0.19.28.

The issue is that as prepend announcement, the only options are None, Bell 1, Bell 2, Bell 3 and none of my uploaded system recordings is available.

I would like to set as prepend announcement a recording of a SIREN.

Create a feature at GitHub · Where software is built I will look in to it…

According to the below I thought it was already implemented and I was doing something wrong.