Combining Horizontal and vertical variogram using gstat?

I am modeling Values that varies horizontally and vertically i.e.(X,Y, Z) using kriging through mgstat. I need to combine horizontal and vertical variogram say Hor: V='460 Nug(0)+ 680 Sph(182)';Ver: V1='900 Nug(0)+ 3.5e3 Gau(31,0,3)'; with anisotropy factor, i.e horizontal/vertical anisotropy factor to be used to weight the influence of horizontal samples more than the influence of vertical samples during prediction. How to include that in my code? kindly help, i am new to mgstat.