Repeating sections and setting a description

Hi there, Let me explain what I'm try to achieve. Let's say I have this repeating section. <fieldset class="repeating_sac">     <select name="attr_contenu">         <option value="">-- Objets disponibles --</option>         <option value="Marteau">Marteau</option>         <option value="Epée">Epée</option>         <option value="Arc long">Arc long</option>         <option value="Bile de dragon">Bile de dragon</option>         <option value="Carquois">Carquois</option>         <option value="Torche">Torche</option>     </select>     <input type="text" name="attr_description" value="@{description}" readonly /> </fieldset> Somewhere inside my worker, I have these datas : const stuffData = {         "Marteau": {             "type" : "arme",             "description" : "Arme de mêlée"         },         "Epée" : {             "type" : "arme",             "description" : "Arme de mêlée"         },         "Arc long" : {             "type" : "arme",             "description" : "Arme à distance"         },         "Bile de dragon" : {             "type" : "divers",             "description" : "Permet d'enflammer"         },         "Carquois" : {             "type" : "divers",             "description" : "relance les dés"         },         "Torche" : {             "type" : "divers",             "description" : "Permet de prendre 2 cartes en fouilles ou enflamer une bile"         }     } I would like to update the description part of the repeating section (the "text input" tag) with the description contained in my datas. My entry point would probably be this on("change:repeating_sac remove:repeating_sac sheet:opened", () => {         getSectionIDs("repeating_sac", (idarray) => {             getAttrs(idarray.map((id) => `repeating_sac_${id}_contenu`), (values) => {                 .....             });         });     }); but I'm in a black hole concerning the dots ..... Is it doable ? If yes, how ?

Firstly this part needs to be altered <input type="text" name="attr_description" value="@{description}" readonly /> Its refering to itself, and should really be something like <input type="text" name="attr_description" value="" readonly /> Secondly, your worker is a bit more complicated than it needs to be. When you are changing something on the same row of a repeating fieldset, you dont need to use getSectionIds (though yours is an elegant way to structure it for when you do need it). You can use on("change:repeating_sac:contenu sheet:opened", () => {     getAttrs(['repeating_sac_contenu'], (values) => {         let contenu = values['repeating_sac_contenu'];         let desc = stuffData[contenu].description; //also valid: stuffData[contenu]['description']         setAttrs({             repeating_sac_description: desc         })     }); }); When omitting the row id, notice the different syntax used on the change line, and everywhere else: on change line: replace _id_ with : everywhere else: replace _id_ with _

Thanks man, it does the trick !! Bonus is I can understand the code ;)

You're welcome! I do generally avoid more advanced code syntax unless necessary, because most of us here are self-taught newbies, and code you can understand and reuse is better than "better" code that is hard to understand.