trouble transferring one attribute to another

I'm in a repeating section, and I'm loading attributes for an inventory item after looking them up (keyed on item name) in a little object array in a worker script. Following a hint picked up on this board somewhere, I'm using the javascript to load an attribute that's tied to a hidden input field, and then using value="@{attr}" to display the attribute in a non-editable field.  Here's the actual code snippet: ... <fieldset class="repeating_bludgeon">     <select class="sheet-input-itemname" name="attr_bludgeon-name" value="name">         <option>(select one></option>         <option>Club</option>         <option>Mace</option>     </select>     <input type="text"   class="sheet-input-damage"   name="attr_bludgeon-hidden-damage" value="0d6"  hidden />     <input type="text"   class="sheet-input-damage"   name="attr_bludgeon-damage"        value='@{bludgeon-hidden-damage}' disabled /> </fieldset> ... <script type="text/worker"> on ("change:repeating_bludgeon:bludgeon-name", function(eventInfo) { let RID = eventInfo.sourceAttribute.slice(19,39); getAttrs(['repeating_bludgeon_bludgeon-name'], function(values) { let club = {name:"Club", TL:"1", damage:"2d6", weight:"3", cost:"0", ap:"0" }; let mace = {name:"Mace", TL:"1", damage:"2d6+2", weight:"3", cost:"20", ap:"0" }; let bludgeons = [club, mace]; for (i = 0 ; i < bludgeons.length ; i++) { if (bludgeons[i].name == values['repeating_bludgeon_bludgeon-name']) { setAttrs({['repeating_bludgeon_'+RID+'_bludgeon-hidden-TL']: bludgeons[i].TL, ['repeating_bludgeon_'+RID+'_bludgeon-hidden-damage']: String(bludgeons[i].damage), ['repeating_bludgeon_'+RID+'_bludgeon-hidden-weight']: bludgeons[i].weight}); } } }) }) </script> The String() on the damage is from an attempt to fix the problem.   Which is... When I run this, and select "club", what ends up appearing in the damage textbox is "26", not "2d6".  When I select mace, it's "28" - and since 8 = "6+2", I'm pretty sure that something somewhere along the way is attempting to either evaluate "2d6", or at least clean it up and make it look like a presentable number (stripping the "d" and even doing the math!) It's not the javascript. If I get rid of the "hidden"/"disabled" thing, and just load an enabled, visible field direct from js, it works properly, so I know js is delivering the string the way it is supposed to. I will accept any/all input, advice, (or even Gibbs-slaps if its something silly I should have noticed).  Thanks in advance.

Okay, that's not how you're supposed to do it. You can just a readonly field like this and display it directly:     <input type="text" class="sheet-input-damage" name="attr_bludgeon-damage" value='0d6' readonly /> This will also solve your problem of displaying it correctly – using a disabled field in this way will make Roll20 try to compute a numerical value for "2d6", which is how you (somehow) end up with 26. Then you can just set bludgeon-damage directly. BTW, since your event starts in a repeating section, you do not need to capture the ID (but it doesn't hurt either): on ("change:repeating_bludgeon:bludgeon-name", function(eventInfo) { getAttrs(['repeating_bludgeon_bludgeon-name'], function(values) { let club = {name:"Club", TL:"1", damage:"2d6", weight:"3", cost:"0", ap:"0" }; let mace = {name:"Mace", TL:"1", damage:"2d6+2", weight:"3", cost:"20", ap:"0" }; let bludgeons = [club, mace]; for (i = 0 ; i < bludgeons.length ; i++) { if (bludgeons[i].name == values['repeating_bludgeon_bludgeon-name']) { setAttrs({'repeating_bludgeon_bludgeon-hidden-TL': bludgeons[i].TL, 'repeating_bludgeon_bludgeon-damage':     bludgeons[i].damage, 'repeating_bludgeon_bludgeon-hidden-weight': bludgeons[i].weight}); } } }) })