diff --git a/build.gradle.kts b/build.gradle.kts
index 213fcfd8..b7406672 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -4,7 +4,7 @@ plugins {
 }
 
 val ktorVersion by extra("1.4.0")
-val dataforgeVersion by extra("0.2.0-dev-3")
+val dataforgeVersion by extra("0.2.0-dev-8")
 val htmlVersion by extra("0.7.2")
 
 val bintrayRepo by extra("kscience")
diff --git a/examples/src/main/kotlin/contour/BasicContour.kt b/examples/src/main/kotlin/contour/BasicContour.kt
index 699ab575..ed3114ad 100644
--- a/examples/src/main/kotlin/contour/BasicContour.kt
+++ b/examples/src/main/kotlin/contour/BasicContour.kt
@@ -24,7 +24,7 @@ fun main() {
     val x1 = listOf(-9, -6, -5, -3, -1)
     val y1 = listOf(0, 1, 4, 5, 7)
 
-    val contour = Contour {
+    val contour = Contour{
         x.numbers = x1
         y.numbers = y1
         z(values)
diff --git a/examples/src/main/kotlin/contour/ConnectNullGaps.kt b/examples/src/main/kotlin/contour/ConnectNullGaps.kt
index 73f5673d..eeba38a3 100644
--- a/examples/src/main/kotlin/contour/ConnectNullGaps.kt
+++ b/examples/src/main/kotlin/contour/ConnectNullGaps.kt
@@ -22,7 +22,7 @@ fun main() {
             listOf<Number?>(null, null, null, 27, null, null, null, 21),
             listOf<Number?>(null, null, null, 26, 25, 24, 23, 22))
 
-    val contour1 = Contour {
+    val contour1 = Contour{
         x.set(x1)
         y.set(y2)
         z.set(z1)
diff --git a/examples/src/main/kotlin/downloadChartAsSVG.kt b/examples/src/main/kotlin/downloadChartAsSVG.kt
index 3851bdba..55119f3d 100644
--- a/examples/src/main/kotlin/downloadChartAsSVG.kt
+++ b/examples/src/main/kotlin/downloadChartAsSVG.kt
@@ -8,7 +8,7 @@ import kscience.plotly.models.ScatterMode
  */
 fun main() {
     val fragment = Plotly.fragment {
-        val plotConfig = PlotlyConfig {
+        val plotConfig = PlotlyConfig{
             saveAsSvg()
         }
 
diff --git a/plotlykt-core/src/commonMain/kotlin/kscience/plotly/Plot.kt b/plotlykt-core/src/commonMain/kotlin/kscience/plotly/Plot.kt
index b507cc98..e958f83c 100644
--- a/plotlykt-core/src/commonMain/kotlin/kscience/plotly/Plot.kt
+++ b/plotlykt-core/src/commonMain/kotlin/kscience/plotly/Plot.kt
@@ -81,7 +81,7 @@ public inline fun Plot.layout(block: Layout.() -> Unit) {
  * Add a generic trace
  */
 public inline fun Plot.trace(block: Trace.() -> Unit): Trace {
-    val trace = Trace.invoke(block)
+    val trace = Trace(block)
     traces(trace)
     return trace
 }
\ No newline at end of file
diff --git a/plotlykt-core/src/commonMain/kotlin/kscience/plotly/dfExt.kt b/plotlykt-core/src/commonMain/kotlin/kscience/plotly/dfExt.kt
index 4ed52876..67ad5585 100644
--- a/plotlykt-core/src/commonMain/kotlin/kscience/plotly/dfExt.kt
+++ b/plotlykt-core/src/commonMain/kotlin/kscience/plotly/dfExt.kt
@@ -19,7 +19,7 @@ import kotlin.time.toDuration
  * A delegate for list of objects with specification
  * TODO move to DataForge core
  */
-internal fun <T : Configurable> Configurable.list(
+internal fun <T : Scheme> Configurable.list(
     spec: Specification<T>, key: Name? = null
 ): ReadWriteProperty<Any?, List<T>> = object : ReadWriteProperty<Any?, List<T>> {
     override fun getValue(thisRef: Any?, property: KProperty<*>): List<T> {
@@ -53,7 +53,7 @@ internal fun Configurable.list(
 /**
  * A variation of [spec] extension with lazy initialization of empty specified nod in case it is missing
  */
-internal fun <T : Configurable> Configurable.lazySpec(
+internal fun <T : Scheme> Configurable.lazySpec(
     spec: Specification<T>, key: Name? = null
 ): ReadWriteProperty<Any?, T> = object : ReadWriteProperty<Any?, T> {
     override fun getValue(thisRef: Any?, property: KProperty<*>): T {
diff --git a/plotlykt-core/src/jvmMain/kotlin/kscience/plotly/JupyterPlotly.kt b/plotlykt-core/src/jvmMain/kotlin/kscience/plotly/JupyterPlotly.kt
index a83d0ed0..7bb05c23 100644
--- a/plotlykt-core/src/jvmMain/kotlin/kscience/plotly/JupyterPlotly.kt
+++ b/plotlykt-core/src/jvmMain/kotlin/kscience/plotly/JupyterPlotly.kt
@@ -84,7 +84,7 @@ object JupyterPlotly: PlotlyRenderer {
     }
 
     fun renderPlot(plot: Plot): String = createHTML().div {
-        plot(plot, config = PlotlyConfig {
+        plot(plot, config = PlotlyConfig{
             responsive = true
         }, renderer = this@JupyterPlotly)
     }
diff --git a/plotlykt-server/build.gradle.kts b/plotlykt-server/build.gradle.kts
index 2322df79..18f64f8f 100644
--- a/plotlykt-server/build.gradle.kts
+++ b/plotlykt-server/build.gradle.kts
@@ -20,7 +20,7 @@ dependencies {
     //api("io.ktor:ktor-server-netty:$ktorVersion")
     api("io.ktor:ktor-html-builder:$ktorVersion")
     api("io.ktor:ktor-websockets:$ktorVersion")
-    api("hep.dataforge:dataforge-output:$dataforgeVersion"){
+    api("hep.dataforge:dataforge-context:$dataforgeVersion"){
         exclude(module = "kotlinx-io")
     }
 }
\ No newline at end of file
diff --git a/plotlykt-server/src/main/kotlin/kscience/plotly/server/JupyterPlotlyServer.kt b/plotlykt-server/src/main/kotlin/kscience/plotly/server/JupyterPlotlyServer.kt
index 3c7526ff..f03f7d60 100644
--- a/plotlykt-server/src/main/kotlin/kscience/plotly/server/JupyterPlotlyServer.kt
+++ b/plotlykt-server/src/main/kotlin/kscience/plotly/server/JupyterPlotlyServer.kt
@@ -222,7 +222,7 @@ public class JupyterPlotlyServer(
         }
 
         public fun renderPlot(plot: Plot): String = createHTML().div {
-            plot(plot, config = PlotlyConfig {
+            plot(plot, config = PlotlyConfig{
                 responsive = true
             }, renderer = jupyterPlotlyServer ?: StaticPlotlyRenderer)
         }
diff --git a/plotlykt-server/src/main/kotlin/kscience/plotly/server/PlotlyServer.kt b/plotlykt-server/src/main/kotlin/kscience/plotly/server/PlotlyServer.kt
index 44722227..96c2041b 100644
--- a/plotlykt-server/src/main/kotlin/kscience/plotly/server/PlotlyServer.kt
+++ b/plotlykt-server/src/main/kotlin/kscience/plotly/server/PlotlyServer.kt
@@ -105,9 +105,9 @@ private class ServerPlotlyRenderer(
 
 public class PlotlyServer internal constructor(private val routing: Routing, private val rootRoute: String) : Configurable {
     override val config: Config = Config()
-    public var updateMode: PlotlyUpdateMode by enum(PlotlyUpdateMode.NONE, key = UPDATE_MODE_KEY)
-    public var updateInterval: Long by long(300, key = UPDATE_INTERVAL_KEY)
-    public var embedData: Boolean by boolean(false)
+    public var updateMode: PlotlyUpdateMode by config.enum(PlotlyUpdateMode.NONE, key = UPDATE_MODE_KEY)
+    public var updateInterval: Long by config.long(300, key = UPDATE_INTERVAL_KEY)
+    public var embedData: Boolean by config.boolean(false)
 
     /**
      * a list of headers that should be applied to all pages