The transition between order and chaos is studied in the warm rotating nucleus W-174 by gamma-spectroscopy, focusing on the conservation of selection rules of the K quantum number with the excitation energy. The W-174 nucleus was populated at high spins by the fusion-evaporation reaction of Ti-50 (at 217 MeV) on a Te-128 backed target. The experiment was performed in Legnaro National Laboratory using the AGATA Demonstrator HPGe-array (AD) coupled with an array of 27 BaF2 scintillator detectors. High-energy gamma-rays measured in the AD and in the scintillators array will be also analyzed to study the Giant Dipole Resonance (GDR) in the compound nucleus W-178. The discrimination between n and gamma in the AD detectors will be employed, following a procedure recently developed by Monte Carlo simulations and using digital Pulse Shape Analysis timing techniques.