Does anyone know an alternative for sql:is-constant when using <xsd:element ref="">
sql:is-constant seems to work fine when calling <xsd:element name="">

Basically I am trying to create placeholder elements in my xsd file, but I want the name of those to validate against my preset schema, so this is why I must use ref instead of name.
Example:

instead of using <xsd:element name="Problem" sql:is-constant="1"> I want to use something like <xsd:element ref="j:Problem" sql:is-constant="1"> so that it validates against my namespace called j.

sql:is-constant is not able to be used in the case, do i have any other options?

Thanks
-----------------
Andrew Owen