Need helps on using DataSink to Excel.

Hi All,

I need helps on using DataSink test step.
My test case contains two datasink test steps which write my properties data to the SAME Excel file.
example for my test case:
TestCase
- DataGen Step
- GroovyScript Step
- SOAP Test Request1
- DataSink1 (write data to myData.xls)
- SOAP Test Request2
- DataSink2 (write data to myData.xls)

The problem herein is the DataSink1 can't write data to myData.xls

When I disable the DataSink2 test step, the DataSink1 work well. But when I enable the DataSink2, I got the issue again.

In my opinion, we can't write data to the same excel file using 2 or more Data Sink test steps.

Anybody give me advices. Or is this issue? How can I overcome?

Many thanks!
Dany4446!