procedure SetDynamicBytes(DbxValue: TDBXValue; Offset: Int64; const Buffer: TBytes; BufferOffset: Int64; Length: Int64); virtual;
virtual __fastcall SetDynamicBytes(TDBXValue DbxValue, Int64 Offset, const TBytes Buffer, Int64 BufferOffset, Int64 Length);
This is SetDynamicBytes, a member of class TDBXRow.