Cush I did find a way, here it is, I have internet explorer:
Below chart, hit Permalink button.
A pop up will appear, and hit RELOADWITH LINK.
Go back to chart and RIGHT CLICK on chart, A pop will appear.
Hit Properties, another pop will appear w/ADDRESS (url) in middle.
COPY THE URL that's in the ADDRESS (url) box.
Go to board and in the post, paste the url. I use CTRL+V
Remove the http:// from url
put [ chart] at beginning of url and at end of url [/chart]
no spaces between brackets and the word chart.
Lots of steps but it works. Think there is an easier way, hope somebody finds it.