You must set all the three dimensions: nr1, nr2 and nr3 for your setting to be taken in account. In the most recent versions of the code there is a warning in the output if you specify only one of the dimensions, I'll add a comment in the manual too.
best regards -- Dr. Lorenzo Paulatto IdR @ IMPMC -- CNRS & Universit? Paris 6 phone: +33 (0)1 44275 084 / skype: paulatz www: http://www-int.impmc.upmc.fr/~paulatto/ mail: 23-24/4?16 Bo?te courrier 115, 4 place Jussieu 75252 Paris C?dex 05
