upfront embed vimeo iframe custom code element

Trying to embed vimeo video but not getting place to paste third party code. When I paste it in Custom Code area I get undefined error warning and it does not show up. I did it last wee on 2kj.com/adept but today it does not work. <iframe src="https://player.vimeo.com/video/30081785?title=0&portrait=0" width="640" height="360" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>