Hi Elang,
Dont worry about offending. I am the one who doesn't know/understand here. Maybe I can learn something.

I mistakenly only heard "Corel" as the app and didnt differentiate that i used a different app.

Here I have a different script that uses a "Black background" to be removed by masking. I do this one in Draw



I add a second object and show myself a transparent background result using "Order of Objects"

But you had mentioned using "Multiply" which for me was a color blending mode in Bitmap software (Thats why I went into paint also)

I am not familiar with what Multiply in Draw is so definitely may be missing something.

Also using simple files as I am could be missing the mark too. Was just hoping we had a solution to offer.

Show this one to your guys. If it looks promising, I'll attach the "BlackBackgroundShot" script here

Anyway. good luck!