How to build the equivalent electric scheme starting from the capacitances computed in Flux?

There are two macros which allow the capacitance matrix calculus, one for 2D and the other for 3D models. Their paths are:

Once the capacitance matrix is obtained the equivalent electric scheme between capacitive regions RC_1 and RC_2 is shown in the figure bellow, where C_11, C_12 and C_22 are the (1,1), (1,2) and (2,2) elements of the capacitance matrix, respectively.