We report on the study of the decay B+→D0(D0ˉ)K+ where D0
and D0ˉ decaying to Kππ0, with the Atwood Dunietz and Soni
(ADS) method. We measure the ratios Rads, R+, R− since the processes $B^+
\to D^0 \bar{K^+}andB^+ \to D^0 K^+areproportionaltoV_{cb}andV_{ub},respectively,aresensitivetor_Bandtotheweakphase\gamma$.