Hello I need to insert the same charachter (a dot) in several fixed positions in the file name, I tried with regular expression but I've not been able to do it:
example
original file name:
D90ITH4125104012_R00 - some title text here.PDF
desider file name:
D.90.IT.H.41251.040.12._R.00 - some title text here.PDF
thanks!