Follow These Steps to use this component :

1) Drag and drop the web block named Script_ExcelJS  inside the screen you want to create the Excel.

2) Use the function named CreateNew_WorkBook to create the new workbook ( Excel )

3) If you want to Create new Sheets , use the function named CreateNew_Sheet

Note: Script_ExcelJSweb block contains the JS script do not forget to add this block to the screen.