why in ALV report, menu List->Export->Spreadsheet,must save in local file

Hello everyone .

in FBL3N (GL line item) that is ALV report.

i want to export data to excel.

but when i go to menu List->Export-> Spreadsheet

system want to save file in local drive.

when i use menu List->Export-> Spreadsheet

it's should show data in excel , not save file to local drive.

please advice.