MT4 to MT5 conversion of a custom indicator

I have an indicator which creates lines in a chart without any reference to price. Numbers are taken from a CSV file and transformed into prices, using a formula. The lines of the CSV file which are used vary according to selection (column), and date (row). Buffers which are associated with the lines also show extensions, and between the lines, there are fib options, e.g. a 50% line between the lines. The second module of the indicator takes data from a second CSV and displays it in a table. It needs a conversion. There may exist a better way to program the indicator.