Stickies not showing

I am displaying 3 forums and stickies, but Stickied threads are not showing…

[bsp-display-topic-index show=’20’ forum =’5, 20, 6417′ show_stickies=’true’]

Any thoughts? I know the plugin has not been updated in a few months so maybe the latest bbpress version is the problem. Seriously love the plugin. Will be donating shortly.

https://wordpress.org/plugins/bbp-style-pack/