Hammer history question

[Petr Janda <elekktretterr@xxxxxxxxxxxxxx>]

So I accidently deleted one of my worksheets. How do I find out modification 
history of the file and the necessary transaction id?

Ive look at "hammer history" but it doesnt seem to show me anything but the 
last modification

petr@elevator:/home/petr/docs/callstream_files/2009# hammer history 
report4.ods
report4.ods     0000000829bb8510 clean {
    000000086128f420 13-Nov-2008 17:57:06
}

even though I modified the file at least 5 times this week and hammer cleanup 
hasnt been run since last sunday.

What to do?

Petr