Hey guys been working a custom sheet and finally got around to learning how to use JS and sheet-workers, but I am having trouble getting my head it. I made this simple modifier updater, very much like the one used in 5e OGL sheet (exact formula, -10/2) but I don't understand what I am doing wrong. Can you guys shed some light on it for me.     <input type='number' class='sheet-strengthScore' name='attr_STR' value='10'>   <input type='number' class='sheet-strengthMod'  name='attr_StrMod' value='0'>  <script type='text/worker'>  on("change:STR", function() {    getAttrs(["STR"], function(v) {        var strength = parseInt(v["STR"]);        var STRmodifier = Math.floor(strength-10) /2;    setAttrs({StrMod: STRmodifier});     });    });    </script>