This work focuses on the striped pattern formation of cholesteric liquid crystals confined in a hybrid aligned cell. The study is performed by means of Monte Carlo simulations. This pattern formation was studied with a chiral molecular additive pair potential proposed for cholesterics by discretizing the Frank free energy density. Experimentally, the thickness of slab to cholesteric pitch ratio (d/p(0)) is fundamental to describe how the stripes will behave, but no deep studies on the role of anchoring energy have been reported to date. According to simulation results, it is possible to observe a textural transition that depends both on the material's physical parameters and the anchoring strength. Such transition, from planar to a spontaneous striped pattern structure, occurs when the anchoring energy at the homeotropic surface reaches a critical value J crit. Moreover, the oscillation amplitudes of directors immediately below the top surface changes with anchoring energy and with the physical parameters of the host liquid crystals. [GRAPHICS] .