Remove Gridlines from Google column chart

Question

I am using the google column chart from this example:

https://developers.google.com/maps/documentation/javascript/examples/elevation-paths

and I want to remove the horizontal gridlines, after searching for apparently below is supposed to make them invisible (I tried with hAxis too) but it does not seem to be effecting the chart at all...

vAxis: {
    gridlines: {
        color: 'transparent'
    }
}

Why is this not doing anything?

Answer 1

This will work for sure:

vAxis: {
   minValue: 0,
   gridlines: {
     color:'transparent'
   },
}