reduced spectral density mapping -- April 26, 2006 - 20:29

Hello-

I am trying to use the reduced spectral density mapping functionality  
in relax.  I am using the 'jw_mapping.py' script, provided in the  
relax distribution.  I see the following error when trying to execute  
the run:

relax> value.set(run='jw', value=1.0200000000000001e-10,  
param='bond_length', res_num=None, res_name=None)
RelaxError: This function is not available for reduced spectral  
density mapping.

Any ideas?  I'm using relax version 1.2.3.

Thanks,
Doug