Inclusive \jpsi\ nuclear modification factor as a function of \Npart\ for \PbPb\ collisions at \sqrtsnnE{5.02}, in the interval $0.3 < \pt\ < 12$ \gevc. Results are shown for three $y$ intervals. The vertical error bars represent statistical uncertainties, the boxes around the points uncorrelated systematic uncertainties, while the correlated uncertainty is shown as a filled box around $\Raa=1$. The results are compared with transport model calculations .