I am graphing my output using -marginsplot- and am running into trouble altering the size of the markers. I've read through other posts on this list and created the following code accordingly, but am getting an error that "option msize() is not allowed." If anyone has a workaround for me, I would appreciate it. My CIs are so narrow that the default marker size is obscuring their bands.

marginsplot, title (Total Health System Costs) ytitle (Costs(2014USD)) xtitle(Month) xsc(reverse) msize(vtiny)