diff --git a/src/main/kotlin/com/featurevisor/sdk/Instance+Evaluation.kt b/src/main/kotlin/com/featurevisor/sdk/Instance+Evaluation.kt
index 600af47..1c81bd2 100644
--- a/src/main/kotlin/com/featurevisor/sdk/Instance+Evaluation.kt
+++ b/src/main/kotlin/com/featurevisor/sdk/Instance+Evaluation.kt
@@ -383,7 +383,7 @@ fun FeaturevisorInstance.evaluateFlag(featureKey: FeatureKey, context: Context =
         }
 
         // treated as enabled because of matched traffic
-        if (bucketValue < matchedTraffic.percentage) {
+        if (bucketValue <= matchedTraffic.percentage) {
             // @TODO: verify if range check should be inclusive or not
             evaluation = Evaluation(
                 featureKey = feature.key,
diff --git a/src/main/kotlin/com/featurevisor/sdk/Instance+Feature.kt b/src/main/kotlin/com/featurevisor/sdk/Instance+Feature.kt
index bc766d0..46cd705 100644
--- a/src/main/kotlin/com/featurevisor/sdk/Instance+Feature.kt
+++ b/src/main/kotlin/com/featurevisor/sdk/Instance+Feature.kt
@@ -11,6 +11,10 @@ fun FeaturevisorInstance.getFeatureByKey(featureKey: String): Feature? {
     return datafileReader.getFeature(featureKey)
 }
 
+fun FeaturevisorInstance.getFeature(featureKey: String): Feature?{
+    return datafileReader.getFeature(featureKey)
+}
+
 internal fun FeaturevisorInstance.findForceFromFeature(
     feature: Feature,
     context: Context,
diff --git a/src/main/kotlin/com/featurevisor/types/Types.kt b/src/main/kotlin/com/featurevisor/types/Types.kt
index e7e5ca1..870316a 100644
--- a/src/main/kotlin/com/featurevisor/types/Types.kt
+++ b/src/main/kotlin/com/featurevisor/types/Types.kt
@@ -50,14 +50,14 @@ data class VariableOverride(
 
     // one of the below must be present in YAML
     val conditions: Condition? = null,
-    val segments: GroupSegment?,
+    val segments: GroupSegment?=null,
 )
 
 @Serializable
 data class Variable(
     val key: VariableKey,
     val value: VariableValue,
-    val overrides: List<VariableOverride>?,
+    val overrides: List<VariableOverride>? = null,
 )
 
 @Serializable
@@ -68,9 +68,9 @@ data class Variation(
     val value: VariationValue,
 
     // 0 to 100 (available from parsed YAML, but not in datafile)
-    val weight: Double?,
+    val weight: Double? = null,
 
-    val variables: List<Variable>?,
+    val variables: List<Variable>? = null,
 )
 
 @Serializable
@@ -97,7 +97,7 @@ data class Force(
 
 data class Slot(
     // @TODO: allow false?
-    val feature: FeatureKey?,
+    val feature: FeatureKey? = null,
 
     // 0 to 100
     val percentage: Weight,
@@ -128,15 +128,15 @@ data class Rule(
     val segments: GroupSegment,
     val percentage: Weight,
 
-    val enabled: Boolean?,
-    val variation: VariationValue?,
-    val variables: VariableValues?,
+    val enabled: Boolean? = null,
+    val variation: VariationValue? = null,
+    val variables: VariableValues? = null,
 )
 
 data class Environment(
-    val expose: Boolean?,
+    val expose: Boolean? = null,
     val rules: List<Rule>,
-    val force: List<Force>?,
+    val force: List<Force>? = null,
 )
 
 typealias Environments = Map<EnvironmentKey, Environment>
diff --git a/src/test/kotlin/com/featurevisor/sdk/serializers/ConditionSerializerTest.kt b/src/test/kotlin/com/featurevisor/sdk/serializers/ConditionSerializerTest.kt
index d1124d9..808b969 100644
--- a/src/test/kotlin/com/featurevisor/sdk/serializers/ConditionSerializerTest.kt
+++ b/src/test/kotlin/com/featurevisor/sdk/serializers/ConditionSerializerTest.kt
@@ -39,7 +39,7 @@ class ConditionSerializerTest {
                     "value": "1.2.3"
                 }, {
                     "attribute": "age",
-                    "operator": "greaterThanOrEqual",
+                    "operator": "greaterThanOrEquals",
                     "value": "18"
                 }]
             }
@@ -70,7 +70,7 @@ class ConditionSerializerTest {
                     "value": "1.2.3"
                 }, {
                     "attribute": "age",
-                    "operator": "greaterThanOrEqual",
+                    "operator": "greaterThanOrEquals",
                     "value": "18"
                 }]
             }