Math.round for Shape layers to land on whole pixels?

Trying to keep my shape layers on whole pixels to avoid subpixel blurring.

For one-dimensional properties, this works fine:

Math.round(value);

But for two dimensional props, I'm running into errors with things like this:

temp = Math.round(content("Rectangle 1").content("Rectangle Path 1").size.value)

(temp[0],temp[1])

temp = Math.round(content("Rectangle 1").content("Rectangle Path 1").size)

(temp[0],temp[1])

I'm sure my syntax is off. Properties in arrays always give me problems. Can you help?