Hey @tech_incubator
Well if you want to increment char for the Excel Column Mapping need then you can check this existing thread.
Get last column of Excel sheet in Alphanumeric form - #7 by aksh1yadav
or if you want to stick with the above query then please find the attached Workflow as per your need:
Char Input = "A"C;
Char next_char = Convert.ToChar(Convert.ToUInt16(Input) +1) // will Give you Next Character i.e. B
If you want characters from A to Z then you can use loop till 26 and use counter here just same i have used in my example
Incrementing_Char.xaml (6.9 KB)
Regards…!!
Aksh