Hi Psoso,
Can you try the following script to set excel range to a variable and copy that into Origin worksheet. Please make sure [Book1]Sheet1 exists in Origin :
Set rngDataAndParam = ActiveSheet.Range("c3", ActiveSheet.Range("c3").End(xlDown))
pws = app.PutWorksheet("[Book1]Sheet1", rngDataAndParam.Value)
Please also check the webpage:
https://www.originlab.com/doc/COM/Classes/Application/PutWorksheet
Thank,
James