i still have problem with jmeter Javascript expression evalaution, because i dont want use beanshell instead (yeah this is way).
In 2.5 and older was possible set up javasript variable value in some strange field of individual components for example, we usualy used comment field for variable setup,
but it now in 2.5.1 doenst work, so im asking here for another way.

For example i need measause duration between 2 http request (at first - i get first timestamp, at second i will get second timestamp, after duration=secondTS-firstTS), im simply missing field or component, where i can put javascript expression? I dont found something like javascript postprocessor or something like that.
Thanks for help.