diff --git a/libraries/adaptive-expressions/src/functionUtils.internal.ts b/libraries/adaptive-expressions/src/functionUtils.internal.ts
index df9acbaf6d..12654edb32 100644
--- a/libraries/adaptive-expressions/src/functionUtils.internal.ts
+++ b/libraries/adaptive-expressions/src/functionUtils.internal.ts
@@ -210,21 +210,8 @@ export class InternalFunctionUtils {
         if (instance instanceof Map && (instance as Map<string, any>) !== undefined) {
             const instanceMap: Map<string, any> = instance as Map<string, any>;
             value = instanceMap.get(property);
-            if (value === undefined) {
-                const prop: string = Array.from(instanceMap.keys()).find(
-                    (k: string): boolean => k.toLowerCase() === property.toLowerCase(),
-                );
-                if (prop !== undefined) {
-                    value = instanceMap.get(prop);
-                }
-            }
         } else {
-            const prop: string = Object.keys(instance).find(
-                (k: string): boolean => k.toLowerCase() === property.toLowerCase(),
-            );
-            if (prop !== undefined) {
-                value = instance[prop];
-            }
+            value = instance[property];
         }
 
         return { value, error };
diff --git a/libraries/adaptive-expressions/tests/expressionParser.test.js b/libraries/adaptive-expressions/tests/expressionParser.test.js
index dcce75dce5..f3ef442d4e 100644
--- a/libraries/adaptive-expressions/tests/expressionParser.test.js
+++ b/libraries/adaptive-expressions/tests/expressionParser.test.js
@@ -22,6 +22,7 @@ const testCases = [
             ['"ab\\ycd"', 'ab\\ycd'], //"ab\ycd" -> ab\ycd
             ["'ab\\'cd'", "ab'cd"], // 'ab\'cd' -> ab'cd
             ['alist[0].Name', 'item1'],
+            ['alist[0].name', undefined], // case sensitive, should not be found
         ],
     },
     {
@@ -170,16 +171,15 @@ const testCases = [
             ['bag.name == null ? "hello": bag.name', 'mybag'],
             ['one > 0? one : two', 1],
             ['hello * 5?"r1":"r2"', 'r2'],
-            ['timestampObj < timestampObj2', false],
-            ['timestampObj2 < timestampObj', true],
-            ['timestampObj > timestampObj2', true],
-            ['timestampObj2 > timestampObj', false],
-            ['timestampObj >= timestampObj2', true],
-            ['timestampObj2 >= timestampObj', false],
-            ['timestampObj <= timestampObj2', false],
-            ['timestampObj2 <= timestampObj', true],
-            ['timestampObj == timestampObj2', false],
-            ['timestampObj == timestampObj', true],
+            ['timeStampObj2 < timeStampObj', true],
+            ['timeStampObj > timeStampObj2', true],
+            ['timeStampObj2 > timeStampObj', false],
+            ['timeStampObj >= timeStampObj2', true],
+            ['timeStampObj2 >= timeStampObj', false],
+            ['timeStampObj <= timeStampObj2', false],
+            ['timeStampObj2 <= timeStampObj', true],
+            ['timeStampObj == timeStampObj2', false],
+            ['timeStampObj == timeStampObj', true],
             ['where([{a: 1, b:{c: 2}}, {b: 2}], x, x == { b: { c: 2}, a: 1})[0].b.c', 2],
         ],
     },
@@ -578,7 +578,7 @@ const testCases = [
             ["formatDateTime('2018-03-15T11:00:00.123', 't')", 'AM'],
             ["formatDateTime('2018-03-15T11:00:00.123', 'tt')", 'AM'],
             ["formatDateTime('2018-03-15')", '2018-03-15T00:00:00.000Z'],
-            ['formatDateTime(timestampObj)', '2018-03-15T13:00:00.000Z'],
+            ['formatDateTime(timeStampObj)', '2018-03-15T13:00:00.000Z'],
             ['formatEpoch(unixTimestamp)', '2018-03-15T13:00:00.000Z'],
             ["formatEpoch(unixTimestamp, 'MM-dd', 'es-ES')", '03-15'],
             ['formatEpoch(unixTimestampFraction)', '2018-03-15T13:00:00.500Z'],
@@ -792,8 +792,8 @@ const testCases = [
                 'string(merge(json1, json2, json3))',
                 '{"FirstName":"John","LastName":"Smith","Enabled":true,"Roles":["Customer","Admin"],"age":36}',
             ],
-            ['merge(callstack[1], callstack[2]).z', 1],
-            ['merge(callstack).z', 1],
+            ['merge(callStack[1], callStack[2]).z', 1],
+            ['merge(callStack).z', 1],
             [
                 "string(merge({k1:'v1'}, [{k2:'v2'}, {k3: 'v3'}], {k4:'v4'}))",
                 '{"k1":"v1","k2":"v2","k3":"v3","k4":"v4"}',
@@ -987,7 +987,7 @@ const scope = {
     validTimeRange: new TimexProperty({ partOfDay: 'morning' }),
     validNow: new TimexProperty({ now: true }),
     invalidHourTimex: new TimexProperty('2001-02-20'),
-    timestampObj: new Date('2018-03-15T13:00:00.000Z'),
+    timeStampObj: new Date('2018-03-15T13:00:00.000Z'),
     timeStampObj2: new Date('2018-01-02T02:00:00.000Z'),
     unixTimestamp: 1521118800,
     unixTimestampFraction: 1521118800.5,