[JS CS3] Grep difficulty

Hi,
I succeeded creating a grep pattern which is used for a string replacement.
var myRegExp = new RegExp ("\..-.*.indd")

if the string is like this, it runs very well :
var x = "001296.01.A-ATELIER GLOTIN.indd";

but like this, it's not satisfying :
var x = "001296.01.ABC-ATELIER GLOTIN.indd";

I cant't get a grep search for a dot, any character n times, a dash, any character n times, a dot, and indd string.
if I do this, var myRegExp = new RegExp ("\..*-.*.indd"), it removes almost everything in the string

What I do wrong ? I am seraching on all grep sites but can't find any clue.
Thanks for light, Loic