Counting Specific Skills in Repeating Section

In my Heavy Gear 4e playtest game  each skill comes from one of 20 domains, a broad area in which skills fall under, eg one of my players has "ambushes" skill in the Awareness domain, another has "Dirty Fighting" under the Melee domain. If a character has a certain amount of skill points in a domain they get bonuses like rerolls etc.  I want to do some sheetworker script to update an attribute eg domain_expertise_athletics, to be the total skill levels in that domain. Ive tried messing around with repeatingSum but I cant seem to get things to work.  This is the code for the repeating skills.   <fieldset class="repeating_skills"> <div class="sheet-3colrow"> <div class="sheet-col"> <button type="roll" name="roll_skill" value="/em uses @{domain_select} @{skill_name} @{skill_level} [[@{skill_level}d6>5]]"></button> <input type="text" name="attr_skill_name" value=""> </div> <div class="sheet-col"> <select name="attr_domain_select"> <option value="1" selected>Athletics</option> <option value="2">Awareness</option> <option value="3">Business </option> <option value="4">Craft </option> <option value="5">Culture </option> <option value="6">Electronic Warfare</option> <option value="7">Electronics </option> <option value="8">Gunnery</option> <option value="9">Hard Science </option> <option value="10">Institutions </option> <option value="11">Investigation </option> <option value="12">Mechanics </option> <option value="13"> Medicine </option> <option value="14">Melee </option> <option value="15">Influence </option> <option value="16">Pilot </option> <option value="17"> Showmanship </option> <option value="18">Social Science </option> <option value="19"> Survival </option> <option value="20">Tactics </option> </select> </div> <div class="sheet-col"> <input type="number" name="attr_skill_level" value=" " min="0" max="5"> <input type="checkbox" name="attr_skill_xp" value="1"> <input type="number" name="attr_skill_xp_stored" value="0"> </div> </div> </fieldset> I would imagine the code goes something like this <script type="text/worker"> const domains = ['athletics','awareness','business','craft','culture','electronicwarfare','electronics','gunnery','hardscience','institutions','investigation','mechanics','medicine','melee','influence','pilot','showmanship','socialscience','survival','tactics']; on("change:repeating_skills sheet:opened",function(){ //make array expertise[] //add repeating_skill_level to expertise[repeating_skill_domain_select] setAttrs({ domains.forEach(domains => { expertise[domains]: ["domain_expertise_" + domains] }); }); });  Any help would be appreciated

The repeatingSum function is more set up for 'columns', so a field in every repeating row getting summed to a total somewhere. It won't work without some tinkering here, since you've got the same field in each row going to a different total depending on another field value. I haven't touched sheets for a long time, but I think something like this should do it (thoroughly untested): const calculateDomainTotals = () => { // get section row ids getSectionIDs('skills', (idArray) => { // grab attributes const requiredAttributes = [ ...idArray.map(id => `repeating_skills_${id}_domain_select`), ...idArray.map(id => `repeating_skills_${id}_skill_level`), ]; getAttrs(requiredAttributes, (attributeValues => { // go through each row, grab the domain from one field and assign the skill value to the output object/domain name const totals = idArray.reduce((output, id) => { const domain = attributeValues[`repeating_skills_${id}_domain_select`]; output[`domain_expertise_${domain}`] = (output[domain] || 0) + (attributeValues[`repeating_skills_${id}_skill_level`] || 0); return output; }, {}); // the output from the reduce function should be right to go straight to setAttrs I think? setAttrs(totals); })); }); }