Strange syntax error in FM11 r/w rules

Hi,

I'm struggling with a rule that converts element/attribute name uppercase/lowercase ruling:

element “xref” {

is fm cross-reference element “Xref”;

idref attribute “idref” is fm IDReference attribute “Idref”;

}

This causes error:

Syntax error near identifier IDReference.

According to Struct Dev Guide (for some reason I couldn't find one for FM 11, this is from FM 9):

element "gi" {. . .

[mdv] attribute "attr"

is fm [read-only] [fmtype] attribute

["fmattr"] [range from low to high];

mdv=idref and fmtype

fmtype A FrameMaker attribute type. Legal values are: String, Strings, Integer,

Integers, Real, Reals, UniqueID, IDReference, IDReferences, and Choice.

Am I blind or..;)

BR, Martti