CXA_DataLayer how to read flatbuffer type? Is there an example?

PROGRAM POU
VAR
	bRead: BOOL;
	fbDL_ReadNodeValue: DL_ReadNodeValue;
	DataRead: CXA_Datalayer.DL_NodeValue;
	strNodePath : STRING;
	bExecute: BOOL;
	bDone: BOOL;
	bActive: BOOL;
	bError: BOOL;
	ErrorID: CXA_Datalayer.ERROR_CODE;
	ErrorIdent: CXA_Datalayer.ERROR_STRUCT;
	strName : STRING := 'Zone_1';
	fbAreas_Read: CXA_MotionCore_fbs.motion_core_fbtypes_SysCfgSafeArea;
	Read_CoordSys: STRING;
	Read_Name: STRING;
	Read_Type: CXA_MotionCore_fbs.motion_core_fbtypes_SafeAreaType;
	Read_Boxes_length: UDINT;
	Read_Boxes: POINTER TO CXA_MotionCore_fbs.motion_core_fbtypes_SysCfgSafeAreaBox;
	Read_Boxes_Int: CXA_MotionCore_fbs.motion_core_fbtypes_SysCfgSafeAreaBox;
	arRead_Active: ARRAY [0..2] OF BOOL;
	arRead_Max:ARRAY [0..2] OF LREAL;
	arRead_Min: ARRAY [0..2] OF LREAL;
	arRead_Unit: ARRAY [0..2] OF STRING;
	i: INT;
END_VAR

IF bRead THEN
	bRead := FALSE;
	strNodePath := CONCAT('motion/cfg/safe-areas/',strName);
	bExecute := TRUE;
END_IF
	
IF fbDL_ReadNodeValue.Done THEN	
	fbAreas_Read.getRootAsSysCfgSafeArea(data:= DataRead.GetData(), size:= DataRead.GetSize());
	Read_CoordSys := fbAreas_Read.getCoordSystem();
	Read_Name := fbAreas_Read.getName();
	Read_Type := fbAreas_Read.getType();
	Read_Boxes_length := fbAreas_Read.getBoxLength();

	FOR i := 0 TO TO_INT(Read_Boxes_length)-1 BY 1 DO		
        	Read_Boxes := fbAreas_Read.getBox(i);
		Read_Boxes_Int := Read_Boxes^;
		arRead_Active[i] := Read_Boxes_Int.getActive();
		arRead_Max[i] := Read_Boxes_Int.getMax();
		arRead_Min[i] := Read_Boxes_Int.getMin();
		arRead_Unit[i] := Read_Boxes_Int.getUnit();	
	END_FOR
	bExecute := FALSE;
END_IF

fbDL_ReadNodeValue(
	Execute:= bExecute, 
	Done=> bDone, 
	Active=> bActive, 
	Error=> bError, 
	ErrorID=> ErrorID, 
	ErrorIdent=> ErrorIdent, 
	ClientId:= , 
	NodeName:= strNodePath, 
	NodeValue:= DataRead);