How to Read Only Specific Columns from Excel Using readexcelsheetpaging?

Question

Hi Community, 
 I am working on an Appian process where I need to read data from an Excel file using the readexcelsheetpaging function. My Excel sheet (sheet 0) contains many columns, but for my use case, I only need to read two specific columns: ENTITY_ID and BENCHMARK_TYPE . These columns are not always in the same position&mdash;they might move if the template changes. 
 Currently, I am using the following code to read the first 6 columns, since I know my required columns are within those:

local!headerSheet: readexcelsheetpaging(
excelDocument: ri!importDocumentId,
sheetNumber: 0,
pagingInfo: a!pagingInfo(1, cons!AOM_READ_EXCEL_MAX_COLUMNS),
numberOfColumns: 6,
password: null,
stopReadingAtFirstBlankRow: false
).data,

However, this approach is not ideal because:

It still reads unnecessary columns if my required columns are not always in the first 6. 
 If the column order changes, I might miss the columns I need or read too many. 
 
 My question: Is there a way in Appian to use readexcelsheetpaging (or any other function) to read only specific columns by name (e.g., ENTITY_ID and BENCHMARK_TYPE ), regardless of their position in the Excel sheet? If not, what is the best practice for efficiently extracting only the needed columns from a sheet with many columns, especially if the order can change? 
 Any advice or workarounds would be greatly appreciated! 
 Thank you!

Shubham Aware · Answer

Readexcelsheetpaging cannot directly read specific columns by name if their positions change. Best practice is to read a broad range including headers, find column indexes by header names dynamically, then extract needed columns by those indexes after reading.