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Using simple Convert.ToChar can help until the column name reaches value Z. This snippet will get you further and it is able to add the second character also, ex: QZ

**Arguments:**

in\_index(**int**) : This **input argument** is the index to be calculated

out\_columnName(**String**) : This **output argument** is a string containing the calculated column name.

This snippet translates a numeric into the corresponding Excel column name

Excel Index to Column