diff --git a/lib/operators.js b/lib/operators.js
index f6f4374..60730bd 100644
--- a/lib/operators.js
+++ b/lib/operators.js
@@ -1,19 +1,20 @@
 var default_operators = {
     'logical':{
-        '||' : function(a, b){ return a || b },
-        '&&' : function(a, b){ return a && b },
-        '!': function(a){return !a}
+        '||' : function(a, b){ return a || b; },
+        '&&' : function(a, b){ return a && b; },
+        '!': function(a){ return !a;}
     },
     'conditional':{
-        '==' : function(a, b){ return a == b },
+        '~=' : function(a, b){ return a && b && a.toLowerCase().includes(b.toLowerCase()); },
+        '==' : function(a, b){ return a == b; },
 
-        '===': function(a, b){ return a === b },
-        '!=': function(a, b){ return a != b },
-        '!==': function(a, b){ return a !== b },
-        '>': function(a, b){ return a > b },
-        '<': function(a, b){ return a < b },
-        '>=': function(a, b){ return a >= b },
-        '<=': function(a, b){ return a <= b }
+        '===': function(a, b){ return a === b; },
+        '!=': function(a, b){ return a != b; },
+        '!==': function(a, b){ return a !== b; },
+        '>': function(a, b){ return a > b; },
+        '<': function(a, b){ return a < b; },
+        '>=': function(a, b){ return a >= b; },
+        '<=': function(a, b){ return a <= b; }
     }
 
 
@@ -22,4 +23,4 @@ var default_operators = {
 module.exports = default_operators;
 
 module.exports.logical = default_operators.logical;
-module.exports.conditional = default_operators.conditional;
\ No newline at end of file
+module.exports.conditional = default_operators.conditional;