flip() function going to wrong index

[Kamalakar-Gavali]

Bascially inside FlipBook i have map array of images,
and added on text box to enter index and calling flip(index) but its displaying wrong image.
i am using its like slider not ebook beacasue i want same effect which is in this library

[nucrasenaa]

same problem and i try to use turnToPage but its displaying wrong image (only go to first page) too.

[cdk0507]

I'm having the same problem.