Hi could the documentation for AssignmentBasic.averageShiftValue also mention that it updates value,sigma,peaks,peakDims on the relevant shift as a byproduct of its operation regards gary -- ------------------------------------------------------------------- Dr Gary Thompson Astbury Centre for Structural Molecular Biology, University of Leeds, Astbury Building, Leeds, LS2 9JT, West-Yorkshire, UK Tel. +44-113-3433024 email: [log in to unmask] Fax +44-113-2331407 -------------------------------------------------------------------