I've read this thread and searched the whole of the forums but I still can't get this to work.
If I type (for example)
tm in 20 Hello
then I get the message box with all the details of the countdown (20 seconds, text: hello), so far so good. But I can't get it to accept the entry.
This thread seem to imply that I need to press period (.) but that doesn't work. It just puts adds the period to the entry. I've also tried enter, tab .... with no success. I can't find any way to get it to accept the countdown. Am I doing something wrong or is this a problem with me having a UK rather than US keyboard (altough Period / Full Stop are both in the same place).