diff --git a/EgtExchange.rc b/EgtExchange.rc
index 7f8d8c1..4e9bb64 100644
Binary files a/EgtExchange.rc and b/EgtExchange.rc differ
diff --git a/Export3MF.cpp b/Export3MF.cpp
index 70a6cb7..fbc9cc8 100644
--- a/Export3MF.cpp
+++ b/Export3MF.cpp
@@ -30,6 +30,9 @@
 using namespace std ;
 using namespace Lib3MF ;
 
+//----------------------------------------------------------------------------
+static string sInfoNamespace = "CustomInfo" ;
+
 //----------------------------------------------------------------------------
 IExport3MF*
 CreateExport3MF( void)
@@ -87,6 +90,17 @@ Export3MF::Export( IGeomDB* pGDB, int nId, const string& sFile)
    if ( IsNull( pIter))
       return false ;
    pIter->GoTo( nId) ;
+
+  // assegno le info dell'oggetto al modello
+   PMetaDataGroup metaDataGrp = m_model->GetMetaDataGroup() ;
+   STRVECTOR vInfo ;
+   pIter->GetAllInfo( vInfo) ;
+   for ( const string& sInfo : vInfo) {
+      string sKey, sVal ;
+      SplitFirst( sInfo, "=", sKey, sVal) ;
+      metaDataGrp->AddMetaData( sInfoNamespace, sKey, sVal, "xs:string", 0) ;
+   }
+
   // esporto l'oggetto e i suoi eventuali figli
    if ( ! ExportObject( *pIter))
       return false ;
@@ -143,16 +157,16 @@ Export3MF::ExportObject( const IGdbIterator& iIter)
             Color cCol ;
             bool bCol = GetColor( cCol, iIter.GetGDB(), iIter.GetId()) ;
            // recupero le proprietà
-            string sSliceNbr ;
-            iIter.GetInfo( "SliceNbr", sSliceNbr) ;
+            STRVECTOR vInfo ;
+            iIter.GetAllInfo( vInfo) ;
            // emetto l'oggetto
             switch (  pGeoObj->GetType()) {
             case SRF_TRIMESH :
-               if ( ! ExportSTM( sName, pGeoObj, frFrame, bCol ? &cCol : nullptr, sSliceNbr))
+               if ( ! ExportSTM( sName, pGeoObj, frFrame, bCol ? &cCol : nullptr, vInfo))
                   return false ;
                break ;
             case SRF_FLATRGN :
-               if ( ! ExportSFR( sName, pGeoObj, frFrame, bCol ? &cCol : nullptr, sSliceNbr))
+               if ( ! ExportSFR( sName, pGeoObj, frFrame, bCol ? &cCol : nullptr, vInfo))
                   return false ;
                break ;
             default :
@@ -191,8 +205,7 @@ Export3MF::TestFilter( int nLev, int nMode, int nStat)
 
 //----------------------------------------------------------------------------
 bool
-Export3MF::ExportSFR( const string& sName, const IGeoObj* pGeoObj, const Frame3d& frFrame, const Color* pCol,
-                      const string& sSliceNbr)
+Export3MF::ExportSFR( const string& sName, const IGeoObj* pGeoObj, const Frame3d& frFrame, const Color* pCol, const STRVECTOR& vInfo)
 {
   // verifico oggetto
    const ISurfFlatRegion* pSFR = GetSurfFlatRegion( pGeoObj) ;
@@ -200,13 +213,12 @@ Export3MF::ExportSFR( const string& sName, const IGeoObj* pGeoObj, const Frame3d
       return false ;
   // ricavo la trimesh equivalente
    const ISurfTriMesh* pStm = pSFR->GetAuxSurf() ;
-   return ExportSTM( sName, pStm, frFrame, pCol, sSliceNbr) ;
+   return ExportSTM( sName, pStm, frFrame, pCol, vInfo) ;
 }
 
 //----------------------------------------------------------------------------
 bool
-Export3MF::ExportSTM( const string& sName, const IGeoObj* pGeoObj, const Frame3d& frFrame, const Color* pCol,
-                      const string& sSliceNbr)
+Export3MF::ExportSTM( const string& sName, const IGeoObj* pGeoObj, const Frame3d& frFrame, const Color* pCol, const STRVECTOR& vInfo)
 {
   // verifico oggetto
    const ISurfTriMesh* pSTM = GetSurfTriMesh( pGeoObj) ;
@@ -258,10 +270,14 @@ Export3MF::ExportSTM( const string& sName, const IGeoObj* pGeoObj, const Frame3d
       Lib3MF_uint32 nColId = ColorHandler3MF( pCol) ;
       meshObject->SetObjectLevelProperty( 1, nColId) ;
    }
-
-  // assegno il layer
-   if ( ! sSliceNbr.empty())
-      meshObject->SetPartNumber( sSliceNbr) ;
+ 
+  // assegno le info
+   PMetaDataGroup metaDataGrp = meshObject->GetMetaDataGroup() ;  
+   for ( const string& sInfo : vInfo) {
+      string sKey, sVal ;
+      SplitFirst( sInfo, "=", sKey, sVal) ;
+      metaDataGrp->AddMetaData( sInfoNamespace, sKey, sVal, "xs:string", 0) ;
+   }
 
    m_model->AddBuildItem( meshObject.get(), m_wrapper->GetIdentityTransform()) ;
    return true ;
diff --git a/Export3MF.h b/Export3MF.h
index 11d4691..56cb3bf 100644
--- a/Export3MF.h
+++ b/Export3MF.h
@@ -33,10 +33,10 @@ class Export3MF : public IExport3MF
       bool ExportObject( const IGdbIterator& iIter) ;
       bool ScanGroup( const IGdbIterator& iIter) ;  
       bool TestFilter( int nLev, int nMode, int nStat) ;
-      bool ExportSFR( const std::string& sName, const IGeoObj* pGeoObj, const Frame3d& frFrame, const Color* pCol,
-                      const std::string& sSliceNbr) ;
-      bool ExportSTM( const std::string& sName, const IGeoObj* pGeoObj, const Frame3d& frFrame, const Color* pCol,
-                      const std::string& sSliceNbr) ;
+      bool ExportSFR( const std::string& sName, const IGeoObj* pGeoObj, const Frame3d& frFrame, const Color* pCol, 
+                      const STRVECTOR& vInfo) ;
+      bool ExportSTM( const std::string& sName, const IGeoObj* pGeoObj, const Frame3d& frFrame, const Color* pCol, 
+                      const STRVECTOR& vInfo) ;
       Lib3MF_uint32 ColorHandler3MF( const Color* pCol) ;
       bool GetColor( Color& pCol, const IGeomDB * pGBD, const int& nId) ;