YcmCompleter commands don't work

[xdl]

I have Ycm compiled with clang-completer, and am able to see autocomplete suggestions as well as documentation for methods. However, when I try to call :YcmCompleter GetDoc (or :YcmCompleter GoTo on any object, I get

ValueError: No semantic completer exists for filetypes: [u'haxe']

Although when I do :echo g:ycm_semantic_triggers I get {'haxe': ['.', '(']}. Are these commands supported and if so do are there additional setup steps required to get them working?

Thanks!