cfprocparam : How do I call stored proc with db defined variable %TYPE?

I have a stored proc in Oracle. One of the input params is a defined type (see below). The error I get whenever I call the cfstoredproc is "expression is of wrong type ORA-06550". It's a formatted varchar, it's a table column. There's no CFPROCPARAM type that matches that.

The type is a package-defined specific format (table column): EMAIL_ADDRESSES_TABLE.USER_ID%TYPE. The table column USER_ID is: USER_ID VARCHAR2(8 BYTE). The USER_ID is a 0-padded numeric, like '00001234'

my call:

    <cfstoredproc procedure="PK_EMAIL.get_emails" datasource="#MYDSN#">


      <cfprocparam type="in" cfsqltype="CF_SQL_VARCHAR" variable="p_user_id" value="#formattedUserId#">

      <cfprocparam type="in" cfsqltype="CF_SQL_NUMERIC" variable="p_active_only" value="1">

      <cfprocresult name="spResult">

    </cfstoredproc>

the stored proc function:

   FUNCTION get_emails(

    p_user_id  IN EMAIL_ADDRESSES_TABLE.USER_ID%TYPE,

    p_active_only  IN SIMPLE_INTEGER

   ) RETURN EMAIL_ADDRESSES_TABLE;

The error I get from the system is

    [Macromedia][Oracle JDBC Driver][Oracle]ORA-06550: line 1, column 18: PLS-00382: expression is of wrong type ORA-06550: line 1, column 7: PL/SQL: Statement ignored