sed -- unterminated 's' command

[whatis]

Hi,

I am using the 'search & replace' option of the 'sed' command and I am getting the error "unterminated `s' command"

The command looks like
sed 's/default=$ORIG_COUNT/default=$COUNT/' test

where I want to change the 'default' value in the 'test' file.

Plz help!

[whatis]

There was a minor mistake. The command should be

sed 's/default='$ORIG_COUNT'/default='$COUNT'/' test

It works fine!