Javafx webview how to fill type=file field programmatically?

Question

Java

I am writing a program for auto-filling fields, using javafx webview, filling in all fields, sending captchas, etc. automated, but it just doesn’t work to fill in the input type='file' field programmatically, I'm sure this can be done, maybe someone rebuilt javafx.java or there is another way, while I found one solution, simulate a click on the file field and then work with the window using Robot.java is not an option since you need to fill several pages at the same time.