Vincent,
I did make my own code and it showed quite easy. Here it is:

In my program before Send RunReport of oReport
Code:
// the values should be got from some initalizing table
Procedure SetParamOptions
    Set piExportTo                 of oDRExportOptionsDialog to C_DRXLS
    Set psFileName                 of oDRExportOptionsDialog to "D:\UTV\DF190\Kala\Reports\AutoFilNy.xlsx"   
    Set psXLSVersion               of oDRExportOptionsDialog to "C_$DRXLS2007"
    Set piPageSectionsCheckBox     of oDRExportOptionsDialog to 0
    Set piReportSectionsCheckBox   of oDRExportOptionsDialog to 0
    Set piGroupSectionsCheckBox    of oDRExportOptionsDialog to 1
    Set piDataOnlyCheckBox         of oDRExportOptionsDialog to 1
    Set piAllPagesCheckBox         of oDRExportOptionsDialog to 0
    Set piColumnWidthForm          of oDRExportOptionsDialog to 30
    Set piPageSpinForm             of oDRExportOptionsDialog to 1
End_Procedure

In DRExportOptions.dg
Some properties:
Code:
   
    // ADAKO-start:      Linked properties, from the invoking program 
    // XLS-properties
    Property String  psFilename                  "Filename.xls"
    Property Integer piExportTo                  C_DRXLS
    Property String  psXLSVersion                "C_$DRXLS2007"
    Property Integer piPageSectionsCheckBox      1
    Property Integer piReportSectionsCheckBox    1
    Property Integer piGroupSectionsCheckBox     1
    Property Integer piDataOnlyCheckBox          1
    Property Integer piAllPagesCheckBox          1
    Property Integer piColumnWidthForm           30
    Property Integer piPageSpinForm              1
    // ADAKO end

...

 Procedure Activating
            Forward Send Activating
            
            // set initial values from properties, feeded from the invoking program  (ADAKO)
            Set Value of oFileNameForm                      to (psFileName                (Self))
            Set Value of oXLSVersionComboForm to C_$DRXLS2007
            Set Checked_State of oPageSectionsCheckBox      to (piPageSectionsCheckBox    (Self))      
            Set Checked_State of oReportSectionsCheckBox    to (piReportSectionsCheckBox  (Self))      
            Set Checked_State of oGroupSectionsCheckBox     to (piGroupSectionsCheckBox   (Self))      
            Set Checked_State of oDataOnlyCheckBox          to (piDataOnlyCheckBox        (Self))      
            Set Checked_State of oAllPagesCheckBox          to (piAllPagesCheckBox        (Self))      
            Set Value of oColumnWidthForm                   to (piColumnWidthForm         (Self))
            Set Value of oPageSpinForm                      to (piPageSpinForm            (Self))   
            
            Set Enabled_State of oPageSpinForm to False
        End_Procedure
This worked fine. I had (and still have) problem to set the combovalue with the right Excel-version. For now it will do.

This could of course be developed to be more flexible, but the user now don't need to fill in all every time.