Within a snippet,  I am trying to prefix  the $TM_PROJECT_DIRECTORY  to a file name in applescript  (but I am not sure how TM environment variables &  files are concatenated into the applescript world?). 

In essence,  the file textmatetostata.do is created   (from textmate)  by default in the  $TM_PROJECT_DIRECTORY.  The problem is that  when stata activates  it cannot find it - since it opens in a different directory by default. 

What I am trying to do is as below: (but this is failing!)

query=${TM_SELECTED_TEXT:-$TM_CURRENT_LINE}

echo "$query" > textmatetostata.do

osascript -e "tell application \"Stata\"

activate

open POSIX file   {$TM_PROJECT_DIRECTORY} & \"textmatetostata.do\"

end tell"