diff --git a/dataforge-io/src/commonMain/kotlin/hep/dataforge/io/JsonMetaFormat.kt b/dataforge-io/src/commonMain/kotlin/hep/dataforge/io/JsonMetaFormat.kt
index bd6fa81a..9d7b5739 100644
--- a/dataforge-io/src/commonMain/kotlin/hep/dataforge/io/JsonMetaFormat.kt
+++ b/dataforge-io/src/commonMain/kotlin/hep/dataforge/io/JsonMetaFormat.kt
@@ -32,11 +32,15 @@ object JsonMetaFormat : MetaFormat {
 }
 
 fun Value.toJson(): JsonElement {
-    return when (type) {
-        ValueType.NUMBER -> JsonPrimitive(number)
-        ValueType.STRING -> JsonPrimitive(string)
-        ValueType.BOOLEAN -> JsonPrimitive(boolean)
-        ValueType.NULL -> JsonNull
+    return if(isList()){
+        JsonArray(list.map { it.toJson() })
+    } else {
+        when (type) {
+            ValueType.NUMBER -> JsonPrimitive(number)
+            ValueType.STRING -> JsonPrimitive(string)
+            ValueType.BOOLEAN -> JsonPrimitive(boolean)
+            ValueType.NULL -> JsonNull
+        }
     }
 }
 
diff --git a/dataforge-io/src/commonTest/kotlin/hep/dataforge/io/MetaFormatTest.kt b/dataforge-io/src/commonTest/kotlin/hep/dataforge/io/MetaFormatTest.kt
index fbaa238e..e177e4d8 100644
--- a/dataforge-io/src/commonTest/kotlin/hep/dataforge/io/MetaFormatTest.kt
+++ b/dataforge-io/src/commonTest/kotlin/hep/dataforge/io/MetaFormatTest.kt
@@ -26,6 +26,7 @@ class MetaFormatTest {
             "node" to {
                 "b" to "DDD"
                 "c" to 11.1
+                "array" to doubleArrayOf(1.0,2.0,3.0)
             }
         }
         val string = meta.asString(JsonMetaFormat)
diff --git a/dataforge-meta/src/commonMain/kotlin/hep/dataforge/values/Value.kt b/dataforge-meta/src/commonMain/kotlin/hep/dataforge/values/Value.kt
index c6e63645..89d1519c 100644
--- a/dataforge-meta/src/commonMain/kotlin/hep/dataforge/values/Value.kt
+++ b/dataforge-meta/src/commonMain/kotlin/hep/dataforge/values/Value.kt
@@ -178,6 +178,22 @@ class ListValue(override val list: List<Value>) : Value {
     override val string: String get() = list.first().string
 
     override fun toString(): String = value.toString()
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other !is Value) return false
+        val otherList = other.list
+        if (list.size != otherList.size) return false
+
+
+        return (0 until list.size).all { list[it] == otherList[it] }
+    }
+
+    override fun hashCode(): Int {
+        return list.hashCode()
+    }
+
+
 }
 
 /**