diff --git a/build.gradle.kts b/build.gradle.kts
index 48be680..75b36df 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -2,7 +2,7 @@ plugins {
     id("ru.mipt.npm.gradle.project")
 }
 
-val dataforgeVersion: String by extra("0.5.2")
+val dataforgeVersion: String by extra("0.6.0-dev-12")
 val ktorVersion: String by extra(ru.mipt.npm.gradle.KScienceVersions.ktorVersion)
 val rsocketVersion by extra("0.15.4")
 
diff --git a/controls-core/src/commonMain/kotlin/space/kscience/controls/manager/DeviceManager.kt b/controls-core/src/commonMain/kotlin/space/kscience/controls/manager/DeviceManager.kt
index 2e7d186..a3a5bfd 100644
--- a/controls-core/src/commonMain/kotlin/space/kscience/controls/manager/DeviceManager.kt
+++ b/controls-core/src/commonMain/kotlin/space/kscience/controls/manager/DeviceManager.kt
@@ -31,7 +31,7 @@ public class DeviceManager : AbstractPlugin(), DeviceHub {
         override val tag: PluginTag = PluginTag("devices", group = PluginTag.DATAFORGE_GROUP)
         override val type: KClass<out DeviceManager> = DeviceManager::class
 
-        override fun invoke(meta: Meta, context: Context): DeviceManager = DeviceManager()
+        override fun build(context: Context, meta: Meta): DeviceManager = DeviceManager()
     }
 }
 
diff --git a/controls-core/src/commonMain/kotlin/space/kscience/controls/ports/phrases.kt b/controls-core/src/commonMain/kotlin/space/kscience/controls/ports/phrases.kt
index 896d87a..8543825 100644
--- a/controls-core/src/commonMain/kotlin/space/kscience/controls/ports/phrases.kt
+++ b/controls-core/src/commonMain/kotlin/space/kscience/controls/ports/phrases.kt
@@ -10,10 +10,10 @@ import kotlinx.coroutines.flow.transform
 /**
  * Transform byte fragments into complete phrases using given delimiter. Not thread safe.
  */
-public fun Flow<ByteArray>.withDelimiter(delimiter: ByteArray, expectedMessageSize: Int = 32): Flow<ByteArray> {
+public fun Flow<ByteArray>.withDelimiter(delimiter: ByteArray): Flow<ByteArray> {
     require(delimiter.isNotEmpty()) { "Delimiter must not be empty" }
 
-    val output = BytePacketBuilder(expectedMessageSize)
+    val output = BytePacketBuilder()
     var matcherPosition = 0
 
     return transform { chunk ->
@@ -40,12 +40,12 @@ public fun Flow<ByteArray>.withDelimiter(delimiter: ByteArray, expectedMessageSi
 /**
  * Transform byte fragments into utf-8 phrases using utf-8 delimiter
  */
-public fun Flow<ByteArray>.withDelimiter(delimiter: String, expectedMessageSize: Int = 32): Flow<String> {
-    return withDelimiter(delimiter.encodeToByteArray(), expectedMessageSize).map { it.decodeToString() }
+public fun Flow<ByteArray>.withDelimiter(delimiter: String): Flow<String> {
+    return withDelimiter(delimiter.encodeToByteArray()).map { it.decodeToString() }
 }
 
 /**
  * A flow of delimited phrases
  */
-public suspend fun Port.delimitedIncoming(delimiter: ByteArray, expectedMessageSize: Int = 32): Flow<ByteArray> =
-    receiving().withDelimiter(delimiter, expectedMessageSize)
+public suspend fun Port.delimitedIncoming(delimiter: ByteArray): Flow<ByteArray> =
+    receiving().withDelimiter(delimiter)
diff --git a/controls-core/src/jvmMain/kotlin/space/kscience/controls/ports/TcpPort.kt b/controls-core/src/jvmMain/kotlin/space/kscience/controls/ports/TcpPort.kt
index 2ef0d89..d458c4d 100644
--- a/controls-core/src/jvmMain/kotlin/space/kscience/controls/ports/TcpPort.kt
+++ b/controls-core/src/jvmMain/kotlin/space/kscience/controls/ports/TcpPort.kt
@@ -83,7 +83,7 @@ public class TcpPort private constructor(
             return TcpPort(context, host, port, coroutineContext)
         }
 
-        override fun invoke(meta: Meta, context: Context): Port {
+        override fun build(context: Context, meta: Meta): Port {
             val host = meta["host"].string ?: "localhost"
             val port = meta["port"].int ?: error("Port value for TCP port is not defined in $meta")
             return open(context, host, port)
diff --git a/controls-serial/src/main/kotlin/space/kscience/controls/serial/SerialPort.kt b/controls-serial/src/main/kotlin/space/kscience/controls/serial/SerialPort.kt
index eab88b6..737e90d 100644
--- a/controls-serial/src/main/kotlin/space/kscience/controls/serial/SerialPort.kt
+++ b/controls-serial/src/main/kotlin/space/kscience/controls/serial/SerialPort.kt
@@ -77,7 +77,7 @@ public class SerialPort private constructor(
             return SerialPort(context, jssc, coroutineContext)
         }
 
-        override fun invoke(meta: Meta, context: Context): Port {
+        override fun build(context: Context, meta: Meta): Port {
             val name by meta.string { error("Serial port name not defined") }
             val baudRate by meta.int(BAUDRATE_9600)
             val dataBits by meta.int(DATABITS_8)
diff --git a/controls-storage/controls-xodus/src/main/kotlin/space/kscience/controls/xodus/XodusDeviceMessageStorage.kt b/controls-storage/controls-xodus/src/main/kotlin/space/kscience/controls/xodus/XodusDeviceMessageStorage.kt
index 2255d89..72cdd1f 100644
--- a/controls-storage/controls-xodus/src/main/kotlin/space/kscience/controls/xodus/XodusDeviceMessageStorage.kt
+++ b/controls-storage/controls-xodus/src/main/kotlin/space/kscience/controls/xodus/XodusDeviceMessageStorage.kt
@@ -111,8 +111,7 @@ public class XodusDeviceMessageStorage(
         internal const val DEVICE_MESSAGE_ENTITY_TYPE = "controls-kt.message"
         public val XODUS_STORE_PROPERTY: Name = Name.of("xodus", "storagePath")
 
-
-        override fun invoke(meta: Meta, context: Context): XodusDeviceMessageStorage {
+        override fun build(context: Context, meta: Meta): XodusDeviceMessageStorage {
             val io = context.fetch(IOPlugin)
             val storePath = io.workDirectory.resolve(
                 meta[XODUS_STORE_PROPERTY]?.string
diff --git a/controls-storage/src/commonMain/kotlin/space/kscience/controls/storage/storageCommon.kt b/controls-storage/src/commonMain/kotlin/space/kscience/controls/storage/storageCommon.kt
index 672e2cc..2a453cf 100644
--- a/controls-storage/src/commonMain/kotlin/space/kscience/controls/storage/storageCommon.kt
+++ b/controls-storage/src/commonMain/kotlin/space/kscience/controls/storage/storageCommon.kt
@@ -15,7 +15,7 @@ import space.kscience.dataforge.context.logger
 //TODO replace by plugin?
 public fun DeviceManager.storage(
     factory: Factory<DeviceMessageStorage>,
-): DeviceMessageStorage = factory(meta, context)
+): DeviceMessageStorage = factory.build(context, meta)
 
 /**
  * Begin to store DeviceMessages from this DeviceManager
@@ -28,7 +28,7 @@ public fun DeviceManager.storeMessages(
     factory: Factory<DeviceMessageStorage>,
     filterCondition: suspend (DeviceMessage) -> Boolean = { true },
 ): Job {
-    val storage = factory(meta, context)
+    val storage = factory.build(context, meta)
     logger.debug { "Message storage with meta = $meta created" }
 
     return hubMessageFlow(context).filter(filterCondition).onEach { message ->
diff --git a/controls-storage/src/jvmMain/kotlin/space/kscience/controls/storage/workDirectory.kt b/controls-storage/src/jvmMain/kotlin/space/kscience/controls/storage/workDirectory.kt
index 7e4086f..62ae391 100644
--- a/controls-storage/src/jvmMain/kotlin/space/kscience/controls/storage/workDirectory.kt
+++ b/controls-storage/src/jvmMain/kotlin/space/kscience/controls/storage/workDirectory.kt
@@ -3,8 +3,8 @@ package space.kscience.controls.storage
 import space.kscience.dataforge.context.ContextBuilder
 import space.kscience.dataforge.io.IOPlugin
 import space.kscience.dataforge.meta.get
-import space.kscience.dataforge.meta.set
 import space.kscience.dataforge.meta.string
+import space.kscience.dataforge.values.set
 import java.nio.file.Path
 import kotlin.io.path.Path
 
diff --git a/controls-tcp/src/main/kotlin/space/kscience/controls/ports/KtorTcpPort.kt b/controls-tcp/src/main/kotlin/space/kscience/controls/ports/KtorTcpPort.kt
index 2c77aa5..9f652b2 100644
--- a/controls-tcp/src/main/kotlin/space/kscience/controls/ports/KtorTcpPort.kt
+++ b/controls-tcp/src/main/kotlin/space/kscience/controls/ports/KtorTcpPort.kt
@@ -65,7 +65,7 @@ public class KtorTcpPort internal constructor(
             return KtorTcpPort(context, host, port, coroutineContext)
         }
 
-        override fun invoke(meta: Meta, context: Context): Port {
+        override fun build(context: Context, meta: Meta): Port {
             val host = meta["host"].string ?: "localhost"
             val port = meta["port"].int ?: error("Port value for TCP port is not defined in $meta")
             return open(context, host, port)
diff --git a/demo/all-things/src/main/kotlin/space/kscience/controls/demo/DemoDevice.kt b/demo/all-things/src/main/kotlin/space/kscience/controls/demo/DemoDevice.kt
index 26ac20b..4abad84 100644
--- a/demo/all-things/src/main/kotlin/space/kscience/controls/demo/DemoDevice.kt
+++ b/demo/all-things/src/main/kotlin/space/kscience/controls/demo/DemoDevice.kt
@@ -35,7 +35,7 @@ class DemoDevice(context: Context, meta: Meta) : DeviceBySpec<DemoDevice>(DemoDe
 
     companion object : DeviceSpec<DemoDevice>(), Factory<DemoDevice> {
 
-        override fun invoke(meta: Meta, context: Context): DemoDevice = DemoDevice(context, meta)
+        override fun build(context: Context, meta: Meta): DemoDevice = DemoDevice(context, meta)
 
         // register virtual properties based on actual object state
         val timeScale by mutableProperty(MetaConverter.double, DemoDevice::timeScaleState) {
diff --git a/demo/car/src/main/kotlin/space/kscience/controls/demo/car/MagixVirtualCar.kt b/demo/car/src/main/kotlin/space/kscience/controls/demo/car/MagixVirtualCar.kt
index 48eaa15..b1b57e5 100644
--- a/demo/car/src/main/kotlin/space/kscience/controls/demo/car/MagixVirtualCar.kt
+++ b/demo/car/src/main/kotlin/space/kscience/controls/demo/car/MagixVirtualCar.kt
@@ -43,6 +43,6 @@ class MagixVirtualCar(context: Context, meta: Meta) : VirtualCar(context, meta)
     }
 
     companion object : Factory<MagixVirtualCar> {
-        override fun invoke(meta: Meta, context: Context): MagixVirtualCar = MagixVirtualCar(context, meta)
+        override fun build(context: Context, meta: Meta): MagixVirtualCar = MagixVirtualCar(context, meta)
     }
 }
diff --git a/demo/car/src/main/kotlin/space/kscience/controls/demo/car/VirtualCar.kt b/demo/car/src/main/kotlin/space/kscience/controls/demo/car/VirtualCar.kt
index a1240a4..db0638c 100644
--- a/demo/car/src/main/kotlin/space/kscience/controls/demo/car/VirtualCar.kt
+++ b/demo/car/src/main/kotlin/space/kscience/controls/demo/car/VirtualCar.kt
@@ -110,6 +110,6 @@ open class VirtualCar(context: Context, meta: Meta) : DeviceBySpec<VirtualCar>(I
     }
 
     companion object : Factory<VirtualCar> {
-        override fun invoke(meta: Meta, context: Context): VirtualCar = VirtualCar(context, meta)
+        override fun build(context: Context, meta: Meta): VirtualCar = VirtualCar(context, meta)
     }
 }
diff --git a/demo/motors/src/main/kotlin/ru/mipt/npm/devices/pimotionmaster/PiMotionMasterDevice.kt b/demo/motors/src/main/kotlin/ru/mipt/npm/devices/pimotionmaster/PiMotionMasterDevice.kt
index ff35345..9928e45 100644
--- a/demo/motors/src/main/kotlin/ru/mipt/npm/devices/pimotionmaster/PiMotionMasterDevice.kt
+++ b/demo/motors/src/main/kotlin/ru/mipt/npm/devices/pimotionmaster/PiMotionMasterDevice.kt
@@ -135,7 +135,7 @@ class PiMotionMasterDevice(
 
     companion object : DeviceSpec<PiMotionMasterDevice>(), Factory<PiMotionMasterDevice> {
 
-        override fun invoke(meta: Meta, context: Context): PiMotionMasterDevice = PiMotionMasterDevice(context)
+        override fun build(context: Context, meta: Meta): PiMotionMasterDevice = PiMotionMasterDevice(context)
 
         val connected by booleanProperty(descriptorBuilder = {
             info = "True if the connection address is defined and the device is initialized"