residuals plot range

How do I change the y scale of my residuals plot? I am plotting with the 
commands:

plot_unfold([1,2,3,4],"xrng",[3.e-4,15.],"yrng",[1.1e-7,599.],"dcol",[1,1,1,1],
"dsym",[2,2,2,2],"res",[1],"rsym",[2,2,2,2],"rcol",[1,1,1,1],"power",[1]);

I naively tried "ryrng" but it didn't seem to work. As default it scales 
the residuals panel y range to that of the first given dataset.

Thanks,
Rhaana
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