Variation of the furthest anchoring radius of the stellar field in the disk R_out with the stellar field in the cases with α_m = 0.1 (which are all with a magnetospheric ejection launched from the system) is not large (left). Without the magnetospheric ejection, the scattering in this result is much larger. Inner disk radius R_in in the same cases displays a clear increasing trend with the increase of stellar magnetic field (right).