Thank you for your reply.
I got the point it's different value of "speed read scale".
I write the same code which use API SpeedRead it is not effect on UI STM but it is effect not UI STM .
Thanks for fixed so quickly. When i can upgrade this version in Asset Store.
I change rect transform height to 64 when the text size is 32.The STM works right.
I want next page effect so i invoke once continue but this effect is wrong.
