Use the below code to add new sheets
GET PROPERTY OF gs_wbook 'Sheets' = gs_sheets .
CALL METHOD OF gs_sheets 'Add' = gs_newsheet .
SET PROPERTY OF gs_newsheet 'Name' = gv_sheet_name .
Also refer the below link for more commands
Use the below code to add new sheets
GET PROPERTY OF gs_wbook 'Sheets' = gs_sheets .
CALL METHOD OF gs_sheets 'Add' = gs_newsheet .
SET PROPERTY OF gs_newsheet 'Name' = gv_sheet_name .
Also refer the below link for more commands