the reason for that is that there are no Bamboo agents that know such capability within your Bamboo instance.
The capabilities that you can choose for Node.js plugin are those that are currently known to Bamboo build agents. If no build agent, and no elastic image, and neither the server knows "Node.js 0.11" as a capability, then you'll not be able to select it.
If you're using Bamboo Cloud, I'd recommend waiting a little, since I think more Node.js versions will be added to stock images soon (stock images are those provided by Bamboo, so no action is needed). You can also always create your own custom EC2 images with custom capabilities, including different version of Node.js. Here is some instruction on how to do this: https://confluence.atlassian.com/bamboo/creating-a-custom-elastic-image-289277146.html
Bamboo 5.9 will no longer be supported after June 12, 2017. What does this mean? As part of our End of Life policy, Atlassian supports major versions for two years after the first major iteratio...
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