Using scheme to always use 2 y-axes

[Craig Hakkio]

I am trying to write a scheme to prepare charts for use at work. I would like to always have 2 y-axes, even if there is only 1 variable. I have tried yesno alt_yaxes, yesno y2axis_ontop, yesno y2axis_onright, but without success. I know the following works: twoway line y1 x1 , yaxis(1 2). But, is there a way to tell my scheme to always do this?