Problem reading the generated barcode

AitorEG

Hi everyone,
I'm, using NAV2013R2, and I'm generating a barcode in a report, with this utility:

http://www.archerpoint.com/blog/Posts/printing-barcodes-rtc-report

I'm generatin code128 barcodes. But I've seen, that the barcode can't be read if it is too small. The same barcode, but a little bigger, can be read. So, I thought that could be a problem of the generated BMP resolution. Is there any way to improve that resolution?
On the other hand, I also tried to generate the barcodes using different fonts I've downloaded. Even the resolutions looks realy good, the barcodes can't be read. And I think that this issue could be because of the data transformation. I directly wrtite a text, for example, "MF118.160", in the layout editor, and change the font to for exameple, code128.ttf. Should I introduce any charater befora/afeter my text, to convert the to the font?

Thank you very much for your help

AitorEG

I'm making the conversion with this function:

TransformTextIntoBc128(pText : Text[250]) RetVal : Text[250]

StartChar:='Ú';
StopChar:='Ü';
Checksum:=104;

FOR i:=1 TO STRLEN(pText) DO BEGIN
  currentchar:=pText[i];
  Checksum := Checksum +(i*(currentchar-32));
END;
ChecksumChar:= Checksum MOD 103;
ChecksumChar:= ChecksumChar+32;

// convert SPACE to ALT+0128
pText:=CONVERTSTR(pText,' ','°');

RetVal:=STRSUBSTNO('%1%2%3%4',StartChar,pText,ChecksumChar,StopChar);
EXIT(RetVal);

And I have installed the Code128bWin font,.Everything has been downlaoded from:

http://mibuso.com/downloads/barcode-128-with-fonts-sample

The barcode is still unreadable...
I add a image of the generated barcode:

AitorEG

We have also tried with this integration:
http://www.kauffmann.nl/2016/01/09/web-services-examples-part-3-generate-barcode/
Abd we can't read codes of 9 characters or more...
Any tip?