[gradsusr] Problem Extracting data in netcdf format

[Zablone Owiti]

 Dear users,
I am attempting to extract seasonal(JAS) data from a monthly netcdf data file using the attached script.
When I run the script, it only write the first timestep data(i.e it fails to loop). 
What could be error in the script?

Thanks

===================================================
ZABLONE OWITI
GRADUATE STUDENT
Nanjing University of Information, Science and Technology
College of International Education
Add: 219 Ning Liu Rd, Nanjing, Jiangsu, 21004, P.R. China
Tel: +86-25-58731402
Fax: +86-25-58731456
Mob. 15077895632
Website: www.nuist.edu.cn
====================================================
"The real art of conversation is not only to say the right thing at the right time, but also to leave unsaid the wrong thing at the tempting moment."

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20110113/a38c74c1/attachment-0003.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: seas.gs
Type: application/octet-stream
Size: 356 bytes
Desc: not available
Url : http://gradsusr.org/pipermail/gradsusr/attachments/20110113/a38c74c1/attachment-0003.obj