calculate induced voltage with different values of seperation and section length

How to store and retrieve data from one GUI to another?

Hello.Im still new with this GUI. My project is using GUI.Can you help me on GUI? Im doing some calculation which I already implemented the formula. But the thing is how to store the data that I key-in the input, how to relate the GUI Table to the formula given in other GUI file.
From the GUI table, section length is the "exposure length"(see from other file) and seperation distance is the "D_m" (see other file) and the soil resistivity = "earth resistivity".
how to calculate each values from the columns and rows values from table to other gui file to their respective tag/space provided (in the double circuit tl figure). Since it has many variables value, it should give data worksheets or table giving the output of induced voltage and section length.
According to my plan, after collecting all the data or answers from the calculation with different values of section length,and seperation distance, (the final answers will be calculated-induced voltage VLFI on current parameters panel), I want to plot a graph of section length against induced voltage.
Please teach me how to do so that I can understand the methods. ASAP.