I am trying to set a class based on the following:

classes:
admin = ( RegCmp(".*adm.*","${host}" ))

i.e. Set the admin class if adm is included in the hostname.

The class never gets set. The debug output is as follows:

HandleFunctionObject(RegCmp(".*adm.*","${host}" ))
IsBuiltinFunction(RegCmp(".*adm.*","${host}" ))
IsBuiltinFunction: RegCmp(".*adm.*","${host}" )
HandleFunction: RegCmp(".*adm.*","${host}" )
FunctionStringToCode...