Tx, I will do.
Problem is the 1.8 props.putMapping(resourceName, layer); which did the work of associating the new resource, later on associated to graphics with contentStream.beginMarkedContentSequence(COSName.OC, resourceName).

I'll try to extract a short test to show

On 3/26/2018 8:01 PM, Tilman Hausherr wrote:
I think the best would be that you open a new SO question. Include your code and all relevant PDFs, i.e. old and result. I don't know if mkl reads here, but he's often on stackoverflow.

If you need more time to create a good question, just upload the result PDF and post the URL. Maybe I'll understand something from there.

Tilman

Am 26.03.2018 um 10:51 schrieb l.gilardoni:
Hello. I need to create a layer and add some graphic there.

However I got stuck at understanding how to. Only ref I found googling is here:

https://stackoverflow.com/questions/43275212/how-do-i-make-modifications-to-existing-layeroptional-content-group-in-pdf/43356673#43356673

which however is based on 1.8. I tried to adapt to 2.0 and managed to create the layer, but apparently anything written to the page does not go into the new layer. Apparently what i'm missing is how to associate new resources to the new layer .. any help/example would be wellcomemed

Luca


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