How to export local data to Excel

Do you have a few more details? Where is that data stored? Is it a record? If yes, a record has a OOTB function to export. What did you try? Did you read the documentation? Do you have any specific issues?

I want to export data stored on the local variables (used a!map())of the interface to Excel

Is this a real use case? What is the purpose?

yes real use case...,yup acheived it by passing data into an entity(created one cdt) then used exportCdtToExcel

Thanks