How Can I Get the Animation Timeline Effect Property Value?

Please browse the following files.
Reading.pptx.zip (34.3 KB)
I want to get animation timeline effect property value as shown in the figure below:
Effect.jpg (407.8 KB)
How can I get “Zoom out to the center of the screen” or “outward”?
I guess I should use subType, right?
ooxml.png (559.7 KB)
But the value seems wrong. Could you tell me how to solve it?

@oscarstar,
Unfortunately, I could not find such settings in PowerPoint. Could you please explain in more detail what it is or show me how to find it step by step?

I recorded how to set it. Please check the following screenshot.
ZoomOut.zip (2.9 MB)

@oscarstar,
Thank you for the video. I need some time, I will reply to you as soon as possible.

@oscarstar,
It looks like you should use the IEffect.getSubtype method, but it does not return the expected values for the Zoom effect. I’ve added a ticket with ID SLIDESJAVA-38992 to our issue-tracking system. Our development team will investigate the case. We will inform you of any progress.