Can't change canvas origin

I’m new to Synfig, I was trying to change the canvas origin to bottom left (like Inkscape), but sometimes the program crashed and when didn’t crash, It changed my resolution to random numbers; How can I fix this?
This is how I did (tell me if I did wrong):
top left: 0/18
bottom right: 32/0
on 1920x1080 resolution.
I’m using Synfig Studio 1.2.0 on Windows 7.

Sorry for bad English!
Thank you!

Hi and welcome,

did you check the wiki ?
It might help you to set up everything

wiki.synfig.org/Unit_System
wiki.synfig.org/Canvas_Properties_Dialog
wiki.synfig.org/Image_Dimensions