Limitation of file name in ADS ?

Hello all,

Just a "simple" question, I'm trying to build a logical and easy filename structure for my many (!) simulations.
I'd really like to know if I'm limited in the number of characters in my filename.

At the moment, I just know I can't start with numbers, and no "." or "-" symbols in the name, all I want to use are letters, numbers and "_"
But nothing about the length of the filename.
Tried with 29 symbols (letters and numbers), seems to work but it crash later, or if I'm unable to import/export layout to schematic...

Thanks in advance for your help !

Regards

Filename must begin with a letter and cannot exceed 32 characters. Spaces in file names or paths are not allowed.

ADS 2008 U2 online manual is here:

http://edocs.soco.agilent.com/display/ads2008U2/Home

Thanks VSWR ( :) ) for the answer, this is what I expected but now, I'm much reliable !

Regards