chart or txt or string 2 decimal num -Comma to point

Load a file in txt format, select the data, change each comma that there is with a point.

in this file there is an algoritm, it s not a function.
if you have a file with data number with the decimal part indicated by a comma, and you need to import this datas as number, you need before transform comma with point.
in this file a varialble is loaded, and it going to be stranformed in a new one with the point instead the comma, and also it go to transforming the string of charts in a decimal number.
For better undestanding please look inside the file.
It is commented.
NB. with this file you going to loose your initial formatting of data, in txt format.