---
url: /flow/guide/scripting-reference/functions/blobmemo/readblobvalue.md
---

# ReadBlobValue

## Declaration

`Function ReadBlobValue( V : Variant; L : integer) : String`

### Example

```pascal
procedure OnMapEvent(var Value:Variant);
begin
Value := ReadBlobValue(Field.Value,0);
end;
```

## Description

ReadBlobValue reads binary data from a BLOB/MEMO type field and converts it to a string.