Google charts API -

i drawing 3d surface plot using google charts api. want draw grid lines in it. searched on internet & tried solutions. not single 1 working.

var options = {xpos: 0, ypos: 0, width: 600, height: 500, colourgradient: colours,                fillpolygons: fillply, tooltips: tooltipstrings, xtitle: xaxisheader,                ytitle: yaxisheader, ztitle: zaxisheader, restrictxrotation: false,                tooltip : {ishtml : true},                backgroundcolor : {fill :"#424240",stroke: 'silver'},                chg: '1,1',                haxis: {gridlines: {color: '#000000', count: 3}},                vaxis: {gridlines: {color: '#dcdcdc', count: 5}},                series: {                    0:{color: '#207795', linewidth: 4, pointsize: 10},                    1:{color: '#464a54', linewidth: 4, pointsize: 10},                  }}; 

can me?