The $Q_\mathrm{CP}$ of \kstar (red circles) and \phim(blue squares) mesons as a function of rapidity for \mbox{0--10$\%$ / 40--100$\%$} (solid markers) and 10--40$\%$ / 40--100$\%$ (open markers) in \pPb collisions at \mbox{\snn $=$ 5.02 \TeV}. The solid and doted lines represents the linear fit to data. The statistical and systematic uncertainties are represented by vertical bars and boxes on the measurements, respectively.