ChageGrep Script Not Working in IDCS3

Question

I have a simple snippet that should do a GrepChange but it seems that it fails to find the target text. Also, when I try to do the search via the UI, it also fails to find the target text. Is there a documented bug about grep searching in InDesign CS3?
Here is the script:
app.findChangeGrepOptions = NothingEnum.nothing;
app.findGrepPreferences = NothingEnum.nothing;
app.changeGrepPreferences = NothingEnum.nothing;
app.findGrepPreferences.findWhat = "^(anthropology)$";
app.changeGrepPreferences.changeTo = "".concat("$1\\t2123");
app.findChangeGrepOptions.includeFootnotes = false;
app.findChangeGrepOptions.includeHiddenLayers = false;
app.findChangeGrepOptions.includeMasterPages = false;
app.findChangeGrepOptions.includeLockedStoriesForFind = false;
app.findChangeGrepOptions.includeLockedLayersForFind = false;
var results = app.activeDocument.selection[0].parentStory.findGrep(false);
if (results.length == 0) {
$.writeln("ID not found.");
I have InDesign v 5.0.4.
The script runs perfectly in CS4.
Thanks in advance,
-- Jeff

Answer 1

You can't set app.findChangeGrepOptions to nothing/null, you must set some of or all its properties to certain values, just like you do a few lines down in your script (such as .includeFootnotes = true).
Peter