I've only played with Webviews in earlier version as noted in my article(s) here: How do I create a webview? Aside from that, I don't bother even trying with the 5.5.x versions since it is being deprecated. Instead, I now work with vCAC and vSphere Web Client as front-ends to workflows and will be investigating the WaveMaker project for vCO: Wavemaker Integration for vCenter Orchestrator – VMware Labs