How to use a blob file for a procedure?

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I am working in Genexus 15, with the generator in .net. I have a transaction that contains a structure like this: 

ID
NOMBRE
CAMPO1
CAMPO2
BLOB (tipo pdf)

I want to use the blob field, as input to a transaction, which takes a pdf adds a watermark and saves it in an X directory. How do I pass that blob field as an imput?

    
asked by Matias N. Amor 14.05.2018 в 15:13
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