no-unused-expressions fix
diff --git a/.eslintrc.json b/.eslintrc.json
index e94d63e..4ce64cf 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -43,7 +43,6 @@
         "lines-around-directive": "off",
         "no-restricted-globals": "off",
         "default-case": "off",
-        "no-unused-expressions": "off",
         "no-sequences": "off",
         "no-void": "off",
         "no-redeclare": "off",
diff --git a/player/js/utils/expressions/EffectInterface.js b/player/js/utils/expressions/EffectInterface.js
index d484d50..dbcd865 100644
--- a/player/js/utils/expressions/EffectInterface.js
+++ b/player/js/utils/expressions/EffectInterface.js
@@ -14,7 +14,8 @@
 
       var effects = elem.data.ef || [];
       var groupInterface = function (name) {
-        i = 0, len = effects.length;
+        i = 0;
+        len = effects.length;
         while (i < len) {
           if (name === effects[i].nm || name === effects[i].mn || name === effects[i].ix) {
             return effectElements[i];