How can I set prameter Segmentation mode? When I send new document to smartcat

[DitriXNew]

The problem is when I uploading xliff files - the system splits segments. i.e. I have one segment in the source xliff but smarcat shows me 5. All string after symbols . ! ? is transferred to another segment.

If I do the import manually, then in menu I can specify segmentation mode and the system does not split segments. But I didn't find how to set this parameter in API.
Thx.