Time-variant simulation

Hello to everyone:

I am trying to simulate a time-variant scenario in WinProp. I configure in WallMan firstly the object trajectory.

<?xml version="1.0" encoding="UTF-8"?>

Then I save the database and I try to load it for simulation in WinProp as a 3D time-variant scenario but I cannot get this option when I load it:

The Simulation Parameters tab just does not appear.