XML CDA2 : remove "mif" indication to xsi:type

We have imported a CLinical Document Architecture v2 (CDA2) schema to create CDA2 content using %XML.Adaptor classes 

Schema 

https://gazelle.ihe.net/XSD/HL7/CDA/POCD_MT000040.xsd

One of the item is "observation " with value property 

Class Region.ITXX.Utility.COMMON.CDA2.Schema.POCDMT000040.Observation Extends (%RegisteredObject, %XML.Adaptor) [ CompileAfter = (Region.ITXX.Utility.COMMON.CDA2.Schema.ActClassObservation, Region.ITXX.Utility.COMMON.CDA2.Schema.NullFlavor, Region.ITXX.Utility.COMMON.CDA2.Schema.bl, Region.ITXX.Utility.COMMON.CDA2.Schema.xActMoodDocumentObservation), ProcedureBlock ]
{

Parameter ELEMENTQUALIFIED = 1;

Parameter NAMESPACE = "urn:hl7-org:v3";

Parameter XMLNAME = "POCD_MT000040.Observation";

Parameter XMLSEQUENCE = 1;

Parameter XMLTYPE = "POCD_MT000040.Observation";

Property value As list Of Region.ITXX.Utility.COMMON.CDA2.Schema.ANY(XMLNAME = "value", XMLPROJECTION = "ELEMENT");

Class Region.ITXX.Utility.COMMON.CDA2.Schema.ANY Extends (%RegisteredObject, %XML.Adaptor) [ Abstract, CompileAfter = Region.ITXX.Utility.COMMON.CDA2.Schema.NullFlavor, ProcedureBlock, SqlTableName = _ANY ]
{

Parameter ELEMENTQUALIFIED = 1;

Parameter NAMESPACE = "urn:hl7-org:v3";

Parameter XMLNAME = "ANY";

Parameter XMLSEQUENCE = 1;

/// An exceptional value expressing missing information
/// and possibly the reason why the information is missing.
Property nullFlavor As Region.ITXX.Utility.COMMON.CDA2.Schema.NullFlavor(XMLNAME = "nullFlavor", XMLPROJECTION = "ATTRIBUTE");

}

Resulting XML shows as follow

<observation classCode="OBS" moodCode="DEF">
<code code="2.6" codeSystem="2.16.840.1.113883.2.9.6.1.48" codeSystemName="Tipologie importi" codeSystemVersion="1" displayName="Totale"/>
<value value="24680" xsi:type="mif:MO"/>
</observation>

A Client CDA2 validator shows the following error

count(cda:value)=1 and count(cda:value/@xsi:type)=1 and cda:value/@xsi:type='MO' and count(cda:value/@value)=1 and number(cda:value/@value)E - 25


Location
/ClinicalDocument/component/structuredBody/component[9]/section/entry/observation

Seems xsi:type="mif:MO" is not accepted

Is it possible to set-up xsi:type="MO" instead ?