Hello Francois,
I am using the Openoffice tool created by you.
The problem I am facing is not able to save file. What I am doing is I have created an open office spreadsheet template and adding the values to set cell text and then save to file. Somehow it saves files, but when I open that it says the file is corrupted and it doesn't have any value which I write.
Attached a complete Vi with required files.
Open office Report generation Tool.zip