Thanks for your reply.
Actually I am using a third party tool to control the dialog, thus putting <pause> into the dialog may not be feasible in my case. Because of my issue......it would be great if there are ways to fully control the reading and pausing using scripts.
About the length, I mean the number of characters had been read out. Like if the full text is "Hello World", and it is has been read out as "Hello W", I wish the function can return 7. Would stm.info[stm.latestNumber] do the trick?