i have got a stacked bar chart using Google charts. i need to display values within each bar, the role: annotation option displays the values at the edge of each section, i need to display the value in the middle of each option. i know i could use chm or chd, but i don't know where to put those options within java-script. i have looked at the google documentation and it talks about the 'Text and Data Value Markers chm' but doesnt give an example how to use these markers within javascript.
chm= N,FF0000,-1,,12| N,000000,0,,12,,c| N,000000,1,,12,,c| N,ffffff,2,,12,,c