use "awvSaveToCSV" without overwriting current contents

Hello,

I'm running a simulation with 50000 sweep points and I want to export all results in one csv file use awvSaveToCSV:

awvSaveToCSV( VT("/cout") VT("/cin") "test.csv" ?from 20p ?to 800p ?step 2p)

The problem is, the file "test.csv" is always being overwritten,  after simulation I get result of 1 sweep point instead of 50000, is it possible to do something like in python: open("test.csv"."a"), write to the file "test.csv" without overwriting the current contents?

Another question is, I have two waves in "awySaveToCSV", and in "test.csv", I also have two time step columns, can I delete one through ocean script?

Thanks for help!

Regards,

Holz