Page contents to <title> tag

[sh8an]

is there any way to get some page contents into page title tag?
running Oct 23 config.

reason need it: on some forums the <title> tag contains meaningless stuff like MS apps and etc, so i want to put in contents of the <div class='maintitle'>
i've done something like this

Code:

[Patterns]
Bounds = "<div class='maintitle'>*</div>"
Limit = 254
Match = "\1<b>\2</b>\3$SET(THtit=\2)"
Replace = "\1<b>\2</b>\3"

question is how to get it into <title>
thanks in advance for help.