need help to pdf code genreration

[yberges]

hello i am a newbe to espo i try to save a project started by an other dev ...
i need to understand this code that create and integrate pdf in a field

// pdfPieceId = ext\pdf\generate('Invoice', entity\attribute('id'), '61ba033fb7e940eab', 'FactureConvention.pdf');

$nomPdf = string\concatenate(number, "-Convention_Journees_",participant.name,".pdf");

pdfPieceId = ext\pdf\generate('Invoice', entity\attribute('id'), '61ba033fb7e940eab', $nomPdf);

name = string\concatenate(number, "- Facture Convention : ",participant.name);​

after generation process i didn't find pdf in related field
workflow is ok
if i undesrtand to create a pdf with name and add pdf in field ... but how i can found field id to check if all is good ?

pdfPieceId = ext\pdf\generate('Invoice', entity\attribute('id'), '61ba033fb7e940eab', $nomPdf);

thank for explain

[rabii]

when you generate a pdf it returns the pdfId in you case pdfPieceId is the id returned once the file is generated. so you can check if the pdfPieceId.

[yberges]

but how i can check the field how the pdf was insert ?
if i check code that
entity\attribute('id'), '61ba033fb7e940eab'
=> how can find this id ?

[yberges]

hello and happy new year
some can help me ?

[shalmaxb]

This is not possible to understand without knowing your app.

[yberges]

hello what do you need ? workflow printscreen ?