Can I save solidworks in a different version?

Hi, everyone!

I will post for the first time.

I'm not good at English. sorry.

Please teach me your skills.

Can I save solidworks in a different version?

ex.  I want to create the file(.sldasm) with solidworks 2018 and save it with solidworks 2015 version.

And, please tell me where the contents are written.

SolidworksApi macros