diff --git a/components-api/src/main/java/pl/touk/nussknacker/engine/api/editor/EditorType.java b/components-api/src/main/java/pl/touk/nussknacker/engine/api/editor/EditorType.java
index 765388b0960..836c19cd176 100644
--- a/components-api/src/main/java/pl/touk/nussknacker/engine/api/editor/EditorType.java
+++ b/components-api/src/main/java/pl/touk/nussknacker/engine/api/editor/EditorType.java
@@ -17,5 +17,6 @@ public enum EditorType {
     TYPED_TABULAR_DATA_EDITOR,
     SPEL_EDITOR,
     JSON_TEMPLATE_EDITOR,
-    MULTI_SELECT_EDITOR
+    MULTI_SELECT_EDITOR,
+    SPEL_EXPRESSIONS_LIST_EDITOR,
 }
diff --git a/components-api/src/main/scala/pl/touk/nussknacker/engine/api/definition/ParameterEditor.scala b/components-api/src/main/scala/pl/touk/nussknacker/engine/api/definition/ParameterEditor.scala
index 8ca161210c5..71fcc1a12aa 100644
--- a/components-api/src/main/scala/pl/touk/nussknacker/engine/api/definition/ParameterEditor.scala
+++ b/components-api/src/main/scala/pl/touk/nussknacker/engine/api/definition/ParameterEditor.scala
@@ -100,3 +100,5 @@ case object CronParameterEditor extends ParameterEditor with StaticParameterEdit
 @JsonCodec case class MultiSelectEditor(possibleValues: List[MultiSelectFixedValue])
     extends ParameterEditor
     with StaticParameterEditor
+
+case object SpelExpressionsListEditor extends ParameterEditor
diff --git a/engine/flink/components/base-unbounded/src/main/scala/pl/touk/nussknacker/engine/flink/util/transformer/aggregate/sampleTransformers.scala b/engine/flink/components/base-unbounded/src/main/scala/pl/touk/nussknacker/engine/flink/util/transformer/aggregate/sampleTransformers.scala
index f4af4ea2fc9..25c105bf9f0 100644
--- a/engine/flink/components/base-unbounded/src/main/scala/pl/touk/nussknacker/engine/flink/util/transformer/aggregate/sampleTransformers.scala
+++ b/engine/flink/components/base-unbounded/src/main/scala/pl/touk/nussknacker/engine/flink/util/transformer/aggregate/sampleTransformers.scala
@@ -30,7 +30,7 @@ object sampleTransformers {
 
     @MethodToInvoke(returnType = classOf[AnyRef])
     def execute(
-        @ParamName("groupBy") groupBy: LazyParameter[AnyRef],
+        @ParamName("groupBy") @Editor(`type` = EditorType.SPEL_EXPRESSIONS_LIST_EDITOR) groupBy: LazyParameter[AnyRef],
         @ParamName("aggregator")
         @AdditionalVariables(Array(new AdditionalVariable(name = "AGG", clazz = classOf[AggregateHelper])))
         @Editor(
@@ -90,7 +90,7 @@ object sampleTransformers {
 
     @MethodToInvoke(returnType = classOf[AnyRef])
     def execute(
-        @ParamName("groupBy") groupBy: LazyParameter[AnyRef],
+        @ParamName("groupBy") @Editor(`type` = EditorType.SPEL_EXPRESSIONS_LIST_EDITOR) groupBy: LazyParameter[AnyRef],
         @ParamName("aggregator")
         @AdditionalVariables(Array(new AdditionalVariable(name = "AGG", clazz = classOf[AggregateHelper])))
         @Editor(
@@ -154,7 +154,7 @@ object sampleTransformers {
 
     @MethodToInvoke(returnType = classOf[AnyRef])
     def execute(
-        @ParamName("groupBy") groupBy: LazyParameter[AnyRef],
+        @ParamName("groupBy") @Editor(`type` = EditorType.SPEL_EXPRESSIONS_LIST_EDITOR) groupBy: LazyParameter[AnyRef],
         @ParamName("aggregator")
         @AdditionalVariables(Array(new AdditionalVariable(name = "AGG", clazz = classOf[AggregateHelper])))
         @Editor(
diff --git a/scenario-compiler/src/main/scala/pl/touk/nussknacker/engine/definition/component/parameter/defaults/EditorBasedLanguageDeterminer.scala b/scenario-compiler/src/main/scala/pl/touk/nussknacker/engine/definition/component/parameter/defaults/EditorBasedLanguageDeterminer.scala
index e8ae0fc8dc7..3fd94b61f22 100644
--- a/scenario-compiler/src/main/scala/pl/touk/nussknacker/engine/definition/component/parameter/defaults/EditorBasedLanguageDeterminer.scala
+++ b/scenario-compiler/src/main/scala/pl/touk/nussknacker/engine/definition/component/parameter/defaults/EditorBasedLanguageDeterminer.scala
@@ -11,7 +11,7 @@ object EditorBasedLanguageDeterminer {
       case BoolParameterEditor | DateParameterEditor | TimeParameterEditor | DateTimeParameterEditor |
           TextareaParameterEditor | DurationParameterEditor(_) | PeriodParameterEditor(_) | CronParameterEditor |
           FixedValuesParameterEditor(_) | FixedValuesWithIconParameterEditor(_) |
-          FixedValuesWithRadioParameterEditor(_) =>
+          FixedValuesWithRadioParameterEditor(_) | SpelExpressionsListEditor =>
         Expression.Language.Spel
       case JsonParameterEditor | MultiSelectEditor(_) => Expression.Language.Json
       case JsonTemplateParameterEditor                => Expression.Language.JsonTemplate
diff --git a/scenario-compiler/src/main/scala/pl/touk/nussknacker/engine/definition/component/parameter/defaults/EditorPossibleValuesBasedDefaultValueDeterminer.scala b/scenario-compiler/src/main/scala/pl/touk/nussknacker/engine/definition/component/parameter/defaults/EditorPossibleValuesBasedDefaultValueDeterminer.scala
index 6ff83c1485d..ff69df3c47f 100644
--- a/scenario-compiler/src/main/scala/pl/touk/nussknacker/engine/definition/component/parameter/defaults/EditorPossibleValuesBasedDefaultValueDeterminer.scala
+++ b/scenario-compiler/src/main/scala/pl/touk/nussknacker/engine/definition/component/parameter/defaults/EditorPossibleValuesBasedDefaultValueDeterminer.scala
@@ -47,6 +47,7 @@ protected object EditorPossibleValuesBasedDefaultValueDeterminer extends Paramet
     case DateTimeParameterEditor     => None
     case BoolParameterEditor         => None
     case TextareaParameterEditor     => None
+    case SpelExpressionsListEditor   => None
   }
 
 }
diff --git a/scenario-compiler/src/main/scala/pl/touk/nussknacker/engine/definition/component/parameter/editor/EditorExtractor.scala b/scenario-compiler/src/main/scala/pl/touk/nussknacker/engine/definition/component/parameter/editor/EditorExtractor.scala
index 76a57ee9d50..e890d5b93f3 100644
--- a/scenario-compiler/src/main/scala/pl/touk/nussknacker/engine/definition/component/parameter/editor/EditorExtractor.scala
+++ b/scenario-compiler/src/main/scala/pl/touk/nussknacker/engine/definition/component/parameter/editor/EditorExtractor.scala
@@ -44,20 +44,21 @@ object EditorExtractor {
             .map(value => FixedExpressionValue(value.expression(), value.label()))
             .toList
         )
-      case EditorType.DATE_EDITOR               => DateParameterEditor
-      case EditorType.TIME_EDITOR               => TimeParameterEditor
-      case EditorType.DATE_TIME_EDITOR          => DateTimeParameterEditor
-      case EditorType.DURATION_EDITOR           => DurationParameterEditor(editor.timeRangeComponents().toList)
-      case EditorType.PERIOD_EDITOR             => PeriodParameterEditor(editor.timeRangeComponents().toList)
-      case EditorType.CRON_EDITOR               => CronParameterEditor
-      case EditorType.TEXTAREA_EDITOR           => TextareaParameterEditor
-      case EditorType.JSON_EDITOR               => JsonParameterEditor
-      case EditorType.SQL_EDITOR                => SqlParameterEditor
-      case EditorType.SPEL_TEMPLATE_EDITOR      => SpelTemplateParameterEditor
-      case EditorType.DICT_EDITOR               => DictParameterEditor(editor.dictId())
-      case EditorType.TYPED_TABULAR_DATA_EDITOR => TabularTypedDataEditor
-      case EditorType.SPEL_EDITOR               => SpelParameterEditor
-      case EditorType.JSON_TEMPLATE_EDITOR      => JsonTemplateParameterEditor
+      case EditorType.DATE_EDITOR                  => DateParameterEditor
+      case EditorType.TIME_EDITOR                  => TimeParameterEditor
+      case EditorType.DATE_TIME_EDITOR             => DateTimeParameterEditor
+      case EditorType.DURATION_EDITOR              => DurationParameterEditor(editor.timeRangeComponents().toList)
+      case EditorType.PERIOD_EDITOR                => PeriodParameterEditor(editor.timeRangeComponents().toList)
+      case EditorType.CRON_EDITOR                  => CronParameterEditor
+      case EditorType.TEXTAREA_EDITOR              => TextareaParameterEditor
+      case EditorType.JSON_EDITOR                  => JsonParameterEditor
+      case EditorType.SQL_EDITOR                   => SqlParameterEditor
+      case EditorType.SPEL_TEMPLATE_EDITOR         => SpelTemplateParameterEditor
+      case EditorType.DICT_EDITOR                  => DictParameterEditor(editor.dictId())
+      case EditorType.TYPED_TABULAR_DATA_EDITOR    => TabularTypedDataEditor
+      case EditorType.SPEL_EDITOR                  => SpelParameterEditor
+      case EditorType.SPEL_EXPRESSIONS_LIST_EDITOR => SpelExpressionsListEditor
+      case EditorType.JSON_TEMPLATE_EDITOR         => JsonTemplateParameterEditor
       case EditorType.MULTI_SELECT_EDITOR =>
         MultiSelectEditor(
           editor