Google charts - Y axis value and actual value doesnt match

Question

As you can see from the link the max value is about 250 when it should be 999(see data below). Why is this and what do I do about it?

http://chart.apis.google.com/chart?chxt=y&chd=e:AMAPAWAqAgGfPnPnLS&chxr=0,0,1000 ,200&chco=76a4fb&chs=600x300&cht=lc&chtt=Some+graph&chls=1.0

import GChartWrapper as C

def makeGraph(maxY, stepY):
    data = [12,15,22,42,32,415,999,999,722]
    G = C.Line(data, encoding='extended')
    G.color('76A4FB')
    G.line(1)
    G.axes('y')
    G.axes.range(0,0,maxY,stepY)
    G.size(600,300)
    G.title("Some graph")
    return G

g = makeGraph(1000,200)

print ""

print g

print ""

Answer 1

This is a little different than the problem that I ran into but this may help. In google charts api you have to sent the axis range parameter to

&chds=a

There is likely an equivalent for your issue.