Is there any command options can convert a document to multiple files?

Hello guys, I’m trying to convert a pptx to svg in windows by commands ,my command is
soffice --headless --invisible --convert-to svg E:\ali\office\ppt\blue.pptx --outdir E:\ali\office\svg
It’s working pretty good. But there is some little problem, in my “blue.pptx”, it’s has 20 sheet. After convert ,all of them merge in one document “blue.svg” , but I need them in single sheet one by one ,it’s like this “blue-0.svg”,“blue-1.svg”,“blue-2.svg”…
“blue-19.svg”.
I’m tring to search in google,but it’s poor for the question. now I’m had to ask for you.
Please help me.
Thanks

There’s no such comment-line option.

OK, I guess so.But I notice something.In UI ,I can export the PPT by manual.if I choose “export” and doesn’t select all sheet to SVG,it will export only one sheet which one is now I’m opening. If I select all then choose “export” to SVG, it will export all sheet in one SVG files. So I guess this feature is exit, but it doesn’t open in command line.So, is there any api can be used to this feature?