Help to transform Byte[] value to something 4gl friendly

Greetings to all...

I have reduced the fingerprint code to the following piece of code, that does all the needed stuff.

Just have one caveat... I'm transformiing this to a class that will be callled from .net as 4gl code aswell, but now i'm in the last step, want to pop out the value I got from scanner to be managed out side of the scanner realm...

METHOD PRIVATE VOID btnStart_Click( INPUT sender AS System.Object, INPUT e AS System.EventArgs ):
        DEFINE VARIABLE ufs_res           AS UFS_STATUS NO-UNDO.
        DEFINE VARIABLE Scanner           AS UFScanner  NO-UNDO.              
        DEFINE VARIABLE EnrollQuality     AS INTEGER    NO-UNDO.
              
        
        //ufs_res = scannerManager:Init() .     it was initie'd in other place.
        Scanner = scannerManager:Scanners[0].
        
        IF Scanner <> ? THEN
        DO:
            ASSIGN            
                Scanner:nTemplateType = 2003.            
            
            Scanner:ClearCaptureImageBuffer().
            ufs_res = Scanner:CaptureSingleImage().
            
            IF STRING(ufs_res) <> STRING(UFS_STATUS:OK) THEN 
            DO:
                ASSIGN 
                    Resultado = "No se pudo leer ".
                ufs_res = scannerManager:Uninit() .
                RETURN.
            END.
            
            Template = NEW "System.Byte[]" (max_template_size).
            ufs_res = Scanner:Extract(Template,TemplateSize, EnrollQuality).
            
            IF  STRING(UFS_STATUS:OK) <> "OK" THEN 
                ASSIGN 
                    resultado = "Lectura incorrecta".
                        
            IF EnrollQuality < 40 THEN 
                ASSIGN 
                    resultado = "Repita la lectura de la huella".
        END. 
        ELSE
            ASSIGN 
                resultado = msgError(ufs_res:value__).
                
        MESSAGE STRING(template)
            VIEW-AS ALERT-BOX.
            
        ufs_res = scannerManager:Uninit() .
        
        RETURN.

    END METHOD.

My problem is the:  

MESSAGE STRING(template)
VIEW-AS ALERT-BOX.

I put that to see what type of data is sending the scanner, so I can handle properly, and do the matching of persons on my payroll database...  How could it be transformd to a native datatype?

My intention is to eliminate all visual of this class... and pop the identifier of the person out, so wil be handled outside the class...