[jQuery] Google Charts

gchart can't recognize series data in barVert...
can't work in
var valueArray = $('#mpngicnt').text(); //80,30,50
series: [ $.gchart.series([ valueArray ], 'red')],
but it works in
series: [ $.gchart.series([ 80,30,50 ], 'red')],
how can i solve it !