Edit IPTC Extension metadata in Photoshop script

[Feeltheday]

Hi,

I'm using a droplet which based on a script will rename my pictures.

I would like to save the original file name in the Supplier's Image ID metadata if possible.

Can I do that only in Photoshop without using Bridge?

I've tried to do a couple of things but I'm always failing.

For now I was using this:

function saveJpeg(docRef, targetFolder){

  var theName = getNameWithoutExt(docRef);

  var doc = activeDocument; 

  doc.info.caption += ">>>> ORIGINAL NAME: ";

  doc.info.caption += doc.name;   

  var desiredName = truncate(theName.replace(/[^\w\s\d\(\)~_~-]/gi, ''),50);

  var thePath = app.activeDocument.path;

  var theFile = new File (targetFolder + "/" + desiredName + ".jpg");

BLA BLA BLA

Thanks for your help, still digging in the meanwhile.

[SuperMerlin · Accepted solution]

if (ExternalObject.AdobeXMPScript == undefined)  ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");
xmp = new XMPMeta( app.activeDocument.xmpMetadata.rawData );
xmp.setProperty("http://ns.useplus.org/ldf/xmp/1.0/","ImageSupplierImageID", activeDocument.name);
app.activeDocument.xmpMetadata.rawData = xmp.serialize();

[Feeltheday]

Thank you it works perfectly like a charm