I need to graph two separate named ranges as a continuous data series. Example:

Series 1; "PastMonthActuals" = Sheet2("A1:A3")
Series 2; "Projections" = Sheet3("A4:A12")

I'm not trying to graph these as separate series, I want it to all be one
line.
In my real workbook these are dynamic ranges, but this simple example will
suffice.

What is the best way (syntax) to set up a new named range that concatenates
the values so that I can feed it into my graph as one series of 12 points?
I've tried the obvious, such as: "AllPts" = PastMonthActuals & Projections

Thank you,
Keith