Subtract column position using VBA (libre StarBasic) macro in LibreCalc given a range of columns eg. A1:B1 must result 1
I have a set of ranges I would like to get the Column position difference as integer using VBA macro in Libre Calc eg.
B17:C28,E17:G28,L17:O28
It must results (C-B) = 1, G-E = 2, O - L = 3
How I can do this?