Contact Form values into chart data?

I’m using Contact Form 7 and would like to plot data from the database as it is updated. The first five lines of the code below return the values, but how do I get these into a GoogleGraph? Also, I wouldn’t want to chart an entry if the value is 0.

total entries=[cfdb-count form="form_name"]
A=[cfdb-count form="form_name" field="class--so" search="A"]
B=[cfdb-count form="form_name" field="class--so" search="B"]
C=[cfdb-count form="form_name" field="class--so" search="C"]
D=[cfdb-count form="form_name" field="class--so" search="D"]

[barChart width="500px" stacked="1"
legend="{ position: 'top', maxLines: 2 }"
vaxis="{title: 'in $000', titleTextStyle: {color: 'blue'}}"
haxis="{title: 'number of entries', titleTextStyle: {color: 'blue'}}"]
['class', 'count'],
['A', 1],
['B', 0],
['C', 2 ],
['D', 4]
[/barChart]

So in other words, in the barChart example where I have the data 1,0,2,4 hard-coded above, I’d want to replace those with live data from the data base (except for the ‘B’,0 case, which shouldn’t be plotted.

https://ww.wp.xz.cn/plugins/googlegraph/