diff --git a/numass-main/build.gradle b/numass-main/build.gradle
index 28a286df..9360b26e 100644
--- a/numass-main/build.gradle
+++ b/numass-main/build.gradle
@@ -34,6 +34,10 @@ dependencies {
     compile "hep.dataforge:grind-terminal" //project(':dataforge-grind:grind-terminal')
     compile "hep.dataforge:kmath"
     compile "hep.dataforge:kodex-fx"
+
+    // https://mvnrepository.com/artifact/org.ehcache/ehcache
+    compile group: 'org.ehcache', name: 'ehcache', version: '3.4.0'
+
 }
 
 task repl(dependsOn: classes, type: JavaExec) {
diff --git a/numass-main/src/main/kotlin/inr/numass/NumassPlugin.kt b/numass-main/src/main/kotlin/inr/numass/NumassPlugin.kt
index 0f13d19e..dc2c3afd 100644
--- a/numass-main/src/main/kotlin/inr/numass/NumassPlugin.kt
+++ b/numass-main/src/main/kotlin/inr/numass/NumassPlugin.kt
@@ -61,18 +61,18 @@ class NumassPlugin : BasicPlugin() {
         val actions = context.pluginManager().getOrLoad(ActionManager::class.java)
         actions.attach(context)
 
-        actions.putTask(NumassTableFilterTask::class.java)
         actions.putTask(NumassFitScanTask::class.java)
         actions.putTask(NumassFitScanSummaryTask::class.java)
-        actions.putTask(NumassFitTask::class.java)
         actions.putTask(NumassFitSummaryTask::class.java)
-        actions.put(selectDataTask)
+        actions.put(selectTask)
         actions.put(analyzeTask)
         actions.put(mergeTask)
         actions.put(mergeEmptyTask)
         actions.put(monitorTableTask)
         actions.put(subtractEmptyTask)
         actions.put(transformTask)
+        actions.put(filterTask)
+        actions.put(fitTask)
     }
 
     private fun loadMath(math: MathPlugin) {
@@ -281,7 +281,8 @@ class NumassPlugin : BasicPlugin() {
  * @param height
  * @return
  */
-@JvmOverloads fun displayJFreeChart(title: String, width: Double = 800.0, height: Double = 600.0, meta: Meta = Meta.empty()): JFreeChartFrame {
+@JvmOverloads
+fun displayJFreeChart(title: String, width: Double = 800.0, height: Double = 600.0, meta: Meta = Meta.empty()): JFreeChartFrame {
     val frame = JFreeChartFrame(meta)
     frame.configureValue("title", title)
     PlotContainer.display(frame, title, width, height)
diff --git a/numass-main/src/main/kotlin/inr/numass/NumassUtils.kt b/numass-main/src/main/kotlin/inr/numass/NumassUtils.kt
index f5cd1918..e847d9ed 100644
--- a/numass-main/src/main/kotlin/inr/numass/NumassUtils.kt
+++ b/numass-main/src/main/kotlin/inr/numass/NumassUtils.kt
@@ -30,6 +30,7 @@ import hep.dataforge.plots.jfreechart.JFreeChartFrame
 import hep.dataforge.tables.ListTable
 import hep.dataforge.tables.Table
 import hep.dataforge.tables.ValueMap
+import hep.dataforge.values.ValueType
 import hep.dataforge.values.Values
 import inr.numass.data.api.NumassAnalyzer
 import inr.numass.data.api.NumassPoint
@@ -220,4 +221,20 @@ fun subtract(context: Context, merge: Table, empty: Table): Table {
     }
 
     return builder.build()
+}
+
+fun Values.unbox(): Map<String, Any?> {
+    val res = HashMap<String, Any?>()
+    for (field in this.names) {
+        val value = this.getValue(field)
+        val obj: Any? = when (value.type) {
+            ValueType.BOOLEAN -> value.booleanValue()
+            ValueType.NUMBER -> value.doubleValue()
+            ValueType.STRING -> value.stringValue()
+            ValueType.TIME -> value.timeValue()
+            ValueType.NULL -> null
+        }
+        res.put(field, obj)
+    }
+    return res
 }
\ No newline at end of file
diff --git a/numass-main/src/main/kotlin/inr/numass/tasks/NumassFitTask.kt b/numass-main/src/main/kotlin/inr/numass/tasks/NumassFitTask.kt
deleted file mode 100644
index daff33db..00000000
--- a/numass-main/src/main/kotlin/inr/numass/tasks/NumassFitTask.kt
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright 2015 Alexander Nozik.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package inr.numass.tasks
-
-import hep.dataforge.actions.Action
-import hep.dataforge.actions.ActionUtils
-import hep.dataforge.data.DataNode
-import hep.dataforge.meta.Meta
-import hep.dataforge.plotfit.PlotFitResultAction
-import hep.dataforge.stat.fit.FitAction
-import hep.dataforge.stat.fit.FitResult
-import hep.dataforge.tables.Table
-import hep.dataforge.workspace.tasks.SingleActionTask
-import hep.dataforge.workspace.tasks.TaskModel
-
-/**
- * Created by darksnake on 16-Sep-16.
- */
-class NumassFitTask : SingleActionTask<Table, FitResult>() {
-
-    override fun getName(): String {
-        return "fit"
-    }
-
-    override fun gatherNode(data: DataNode<*>): DataNode<Table> {
-        return data.checked(Table::class.java)
-    }
-
-    override fun validate(model: TaskModel) {
-        if (model.meta().isEmpty) {
-            throw RuntimeException("Fit element not found in model")
-        }
-    }
-
-    override fun getAction(model: TaskModel): Action<Table, FitResult> {
-        val action = FitAction()
-        return if (model.meta().getBoolean("frame", false)) {
-            ActionUtils.compose(action, PlotFitResultAction())
-        } else {
-            action
-        }
-    }
-
-    override fun buildModel(model: TaskModel.Builder, meta: Meta) {
-        model.dependsOn("filter", meta);
-    }
-}
diff --git a/numass-main/src/main/kotlin/inr/numass/tasks/NumassTableFilterTask.kt b/numass-main/src/main/kotlin/inr/numass/tasks/NumassTableFilterTask.kt
deleted file mode 100644
index b2670db6..00000000
--- a/numass-main/src/main/kotlin/inr/numass/tasks/NumassTableFilterTask.kt
+++ /dev/null
@@ -1,77 +0,0 @@
-package inr.numass.tasks
-
-import hep.dataforge.actions.Action
-import hep.dataforge.actions.OneToOneAction
-import hep.dataforge.context.Context
-import hep.dataforge.data.DataNode
-import hep.dataforge.description.TypedActionDef
-import hep.dataforge.meta.Laminate
-import hep.dataforge.meta.Meta
-import hep.dataforge.tables.Table
-import hep.dataforge.tables.TableTransform
-import hep.dataforge.values.ValueType
-import hep.dataforge.values.Values
-import hep.dataforge.workspace.tasks.SingleActionTask
-import hep.dataforge.workspace.tasks.TaskModel
-import inr.numass.data.api.NumassPoint
-import inr.numass.utils.ExpressionUtils
-import java.util.*
-
-/**
- * Created by darksnake on 13-Aug-16.
- */
-class NumassTableFilterTask : SingleActionTask<Table, Table>() {
-
-    override fun getName(): String {
-        return "filter"
-    }
-
-    override fun gatherNode(data: DataNode<*>): DataNode<Table> {
-        return data.checked(Table::class.java)
-    }
-
-
-    override fun buildModel(model: TaskModel.Builder, meta: Meta) {
-        if (meta.hasMeta("empty")) {
-            model.dependsOn("dif", meta)
-        } else {
-            model.dependsOn("transform", meta)
-        }
-    }
-
-    override fun getAction(model: TaskModel): Action<Table, Table> {
-        return FilterTableAction()
-    }
-
-    @TypedActionDef(name = "filterTable", inputType = Table::class, outputType = Table::class)
-    private inner class FilterTableAction : OneToOneAction<Table, Table>() {
-        override fun execute(context: Context, name: String, input: Table, inputMeta: Laminate): Table {
-            if (inputMeta.hasValue("from") || inputMeta.hasValue("to")) {
-                val uLo = inputMeta.getDouble("from", 0.0)!!
-                val uHi = inputMeta.getDouble("to", java.lang.Double.POSITIVE_INFINITY)!!
-                getLogger(context, inputMeta).debug("Filtering finished")
-                return TableTransform.filter(input, NumassPoint.HV_KEY, uLo, uHi)
-            } else if (inputMeta.hasValue("condition")) {
-                return TableTransform.filter(input) { ExpressionUtils.condition(inputMeta.getString("condition"), unbox(it)) }
-            } else {
-                throw RuntimeException("No filtering condition specified")
-            }
-        }
-    }
-
-    private fun unbox(dp: Values): Map<String, Any?> {
-        val res = HashMap<String, Any?>()
-        for (field in dp.names) {
-            val value = dp.getValue(field)
-            val obj: Any? = when (value.type) {
-                ValueType.BOOLEAN -> value.booleanValue()
-                ValueType.NUMBER -> value.doubleValue()
-                ValueType.STRING -> value.stringValue()
-                ValueType.TIME -> value.timeValue()
-                ValueType.NULL -> null
-            }
-            res.put(field, obj)
-        }
-        return res
-    }
-}
diff --git a/numass-main/src/main/kotlin/inr/numass/tasks/NumassTasks.kt b/numass-main/src/main/kotlin/inr/numass/tasks/NumassTasks.kt
index d085da08..b8432984 100644
--- a/numass-main/src/main/kotlin/inr/numass/tasks/NumassTasks.kt
+++ b/numass-main/src/main/kotlin/inr/numass/tasks/NumassTasks.kt
@@ -14,8 +14,11 @@ import hep.dataforge.meta.MetaUtils
 import hep.dataforge.plots.PlotFrame
 import hep.dataforge.plots.data.DataPlot
 import hep.dataforge.plots.jfreechart.JFreeChartFrame
+import hep.dataforge.stat.fit.FitAction
+import hep.dataforge.stat.fit.FitResult
 import hep.dataforge.tables.ListTable
 import hep.dataforge.tables.Table
+import hep.dataforge.tables.TableTransform
 import hep.dataforge.tables.XYAdapter
 import hep.dataforge.values.ValueType
 import inr.numass.NumassUtils
@@ -24,10 +27,13 @@ import inr.numass.actions.MergeDataAction.MERGE_NAME
 import inr.numass.actions.TransformDataAction
 import inr.numass.addSetMarkers
 import inr.numass.data.analyzers.SmartAnalyzer
+import inr.numass.data.api.NumassPoint
 import inr.numass.data.api.NumassSet
 import inr.numass.subtract
+import inr.numass.unbox
+import inr.numass.utils.ExpressionUtils
 
-val selectDataTask = task("select") {
+val selectTask = task("select") {
     model { meta ->
         data("*")
         configure(meta.getMetaOrEmpty("data"))
@@ -40,7 +46,7 @@ val selectDataTask = task("select") {
 @ValueDef(name = "showPlot", type = arrayOf(ValueType.BOOLEAN), info = "Show plot after complete")
 val monitorTableTask = task("monitor") {
     model { meta ->
-        dependsOn("select", meta)
+        dependsOn(selectTask, meta)
         configure(meta.getMetaOrEmpty("analyzer"))
     }
     join<NumassSet, Table> {
@@ -90,7 +96,7 @@ val monitorTableTask = task("monitor") {
 
 val analyzeTask = task("analyze") {
     model { meta ->
-        dependsOn("select", meta);
+        dependsOn(selectTask, meta);
         configure(MetaUtils.optEither(meta, "analyzer", "prepare").orElse(Meta.empty()))
     }
     pipe<NumassSet, Table> {
@@ -106,7 +112,7 @@ val analyzeTask = task("analyze") {
 
 val mergeTask = task("merge") {
     model { meta ->
-        dependsOn("analyze", meta)
+        dependsOn(analyzeTask, meta)
         configure(meta.getMetaOrEmpty("merge"))
     }
     action<Table, Table>(MergeDataAction())
@@ -123,7 +129,7 @@ val mergeEmptyTask = task("empty") {
                 .removeNode("empty")
                 .setNode("data", meta.getMeta("empty"))
                 .setValue("merge." + MERGE_NAME, meta.getString("merge." + MERGE_NAME, "") + "_empty");
-        dependsOn("merge", newMeta)
+        dependsOn(mergeTask, newMeta)
     }
     transform<Table, Table> { data ->
         val builder = DataSet.builder(Table::class.java)
@@ -137,8 +143,8 @@ val mergeEmptyTask = task("empty") {
 
 val subtractEmptyTask = task("dif") {
     model { meta ->
-        dependsOn("merge", meta, "data")
-        dependsOn("empty", meta, "empty")
+        dependsOn(mergeTask, meta, "data")
+        dependsOn(mergeEmptyTask, meta, "empty")
     }
     transform<Table, Table> { data ->
         val builder = DataTree.builder(Table::class.java)
@@ -167,14 +173,42 @@ val transformTask = task("transform") {
     model { meta ->
         if (meta.hasMeta("merge")) {
             if (meta.hasMeta("empty")) {
-                dependsOn("dif", meta)
+                dependsOn(subtractEmptyTask, meta)
             } else {
-                dependsOn("merge", meta);
+                dependsOn(mergeTask, meta);
             }
         } else {
-            dependsOn("analyze", meta);
+            dependsOn(analyzeTask, meta);
         }
         configure(MetaUtils.optEither(meta, "transform", "prepare").orElse(Meta.empty()))
     }
     action<Table, Table>(TransformDataAction());
 }
+
+val filterTask = task("filter") {
+    model { meta ->
+        dependsOn(transformTask, meta)
+    }
+    pipe<Table, Table> {
+        result { data ->
+            if (meta.hasValue("from") || meta.hasValue("to")) {
+                val uLo = meta.getDouble("from", 0.0)!!
+                val uHi = meta.getDouble("to", java.lang.Double.POSITIVE_INFINITY)!!
+                this.log.report("Filtering finished")
+                TableTransform.filter(data, NumassPoint.HV_KEY, uLo, uHi)
+            } else if (meta.hasValue("condition")) {
+                TableTransform.filter(data) { ExpressionUtils.condition(meta.getString("condition"), it.unbox()) }
+            } else {
+                throw RuntimeException("No filtering condition specified")
+            }
+        }
+    }
+}
+
+val fitTask = task("fit") {
+    model { meta ->
+        dependsOn(filterTask, meta)
+        configure(meta.getMeta("fit"))
+    }
+    action<Table, FitResult>(FitAction())
+}