Excel Retain the Formulae

Hello All,

I have a requirement that Upload spread sheet and display in different screens. After made any changes to that particular fields need to download the spread sheet. 

I have gone through all the process, HOWEVER my issue is with formulae. Uploaded spread sheet is having formulae and while downloading its coming as data (without formulae)

Could any one can suggest how to proceed with this. I need the downloaded spread sheet also should have formulae.

Thanks in advace.

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