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>