diff --git a/numass-main/src/main/kotlin/inr/numass/NumassPlugin.kt b/numass-main/src/main/kotlin/inr/numass/NumassPlugin.kt
index b0d7e8b4..5bc2567a 100644
--- a/numass-main/src/main/kotlin/inr/numass/NumassPlugin.kt
+++ b/numass-main/src/main/kotlin/inr/numass/NumassPlugin.kt
@@ -114,6 +114,7 @@ class NumassPlugin : BasicPlugin() {
         }
     }
 
+
     /**
      * Load all numass model factories
      *
diff --git a/numass-main/src/main/kotlin/inr/numass/actions/MergeDataAction.kt b/numass-main/src/main/kotlin/inr/numass/actions/MergeDataAction.kt
index e82de07c..79e958c4 100644
--- a/numass-main/src/main/kotlin/inr/numass/actions/MergeDataAction.kt
+++ b/numass-main/src/main/kotlin/inr/numass/actions/MergeDataAction.kt
@@ -29,7 +29,6 @@ import hep.dataforge.tables.Table
 import hep.dataforge.tables.Tables
 import hep.dataforge.values.ValueMap
 import hep.dataforge.values.Values
-import inr.numass.NumassUtils
 import inr.numass.data.analyzers.NumassAnalyzer
 import inr.numass.data.api.NumassPoint
 import java.util.*
@@ -60,7 +59,7 @@ object MergeDataAction : ManyToOneAction<Table, Table>("numass.merge", Table::cl
     }
 
     override fun afterGroup(context: Context, groupName: String, outputMeta: Meta, output: Table) {
-        context.output.get(name, groupName).render(NumassUtils.wrap(output, outputMeta))
+        context.output[name, groupName].render(output,outputMeta)
         super.afterGroup(context, groupName, outputMeta, output)
     }
 
diff --git a/numass-main/src/main/kotlin/inr/numass/actions/TransformDataAction.kt b/numass-main/src/main/kotlin/inr/numass/actions/TransformDataAction.kt
index eed58097..3cdefa25 100644
--- a/numass-main/src/main/kotlin/inr/numass/actions/TransformDataAction.kt
+++ b/numass-main/src/main/kotlin/inr/numass/actions/TransformDataAction.kt
@@ -11,7 +11,6 @@ import hep.dataforge.isAnonymous
 import hep.dataforge.meta.Laminate
 import hep.dataforge.meta.Meta
 import hep.dataforge.meta.MetaUtils
-
 import hep.dataforge.tables.ColumnFormat
 import hep.dataforge.tables.ColumnTable
 import hep.dataforge.tables.ListColumn
@@ -19,7 +18,6 @@ import hep.dataforge.tables.Table
 import hep.dataforge.values.ValueType.NUMBER
 import hep.dataforge.values.ValueType.STRING
 import hep.dataforge.values.Values
-import inr.numass.NumassUtils
 import inr.numass.data.analyzers.NumassAnalyzer.Companion.COUNT_RATE_ERROR_KEY
 import inr.numass.data.analyzers.NumassAnalyzer.Companion.COUNT_RATE_KEY
 import inr.numass.pointExpression
@@ -103,7 +101,7 @@ object TransformDataAction : OneToOneAction<Table, Table>("numass.transform", Ta
         val res = table.addColumn(ListColumn.build(table.getColumn(COUNT_RATE_KEY).format, cr.stream()))
                 .addColumn(ListColumn.build(table.getColumn(COUNT_RATE_ERROR_KEY).format, crErr.stream()))
 
-        context.output["", name].render(NumassUtils.wrap(res, meta))
+        context.output[this@TransformDataAction.name, name].render(res, meta)
         return res
     }
 
diff --git a/numass-main/src/test/kotlin/inr/numass/NumassPluginTest.kt b/numass-main/src/test/kotlin/inr/numass/NumassPluginTest.kt
new file mode 100644
index 00000000..52390eec
--- /dev/null
+++ b/numass-main/src/test/kotlin/inr/numass/NumassPluginTest.kt
@@ -0,0 +1,30 @@
+package inr.numass
+
+import hep.dataforge.context.Global
+import hep.dataforge.meta.buildMeta
+import hep.dataforge.stat.fit.FitManager
+import org.junit.Before
+import org.junit.Test
+
+class NumassPluginTest {
+    @Before
+    fun setup() {
+        NumassPlugin().startGlobal()
+    }
+
+    @Test
+    fun testModels() {
+        val meta = buildMeta("model") {
+            "modelName" to "sterile"
+            "resolution" to {
+                "width" to 8.3e-5
+                "tail" to "function::numass.resolutionTail.2017.mod"
+            }
+            "transmission" to {
+                "trapping" to "function::numass.trap.nominal"
+            }
+        }
+        val model = Global.load<FitManager>().buildModel(meta)
+    }
+}
+