Please, can the Quit Message in Options>IRC>Messages be given command line modification?

I thought I would get clever and make a $duration text string to update my Quit Message automatically each time I run mIRC. Soon found there was no command line method of modifying that 'option'.

So ... instead I made a quick script to search for the 'quit=' line in mirc.ini and replace it with my new $duration text each time mIRC runs. I thought all went great as I could see the change being made in the mirc.ini file perfectly, until I disconnected/reconnected mIRC and the damn thing was still set to whatever I had manually typed into the Options>IRC>Messages dialog box.

If there is a way around this, please let me know... If not, please can this little change be made in a future release? Either allow the quit= line in mirc.ini be modifyable or introduce a commandline function to modify the setting.

THANKS!