diff --git a/build/com.mbeddr.ext/build-ex-tests.xml b/build/com.mbeddr.ext/build-ex-tests.xml
index e115e3888b..a2e4e2246e 100644
--- a/build/com.mbeddr.ext/build-ex-tests.xml
+++ b/build/com.mbeddr.ext/build-ex-tests.xml
@@ -196,6 +196,8 @@
   </target>
   
   <target name="fetchDependencies">
+    <mkdir dir="${build.tmp}/deps/com.mbeddr.mpsutil.build/com.mbeddr.mpsutil.zip" />
+    <unzip src="${artifacts.com.mbeddr.mpsutil.build}/com.mbeddr.mpsutil.zip" dest="${build.tmp}/deps/com.mbeddr.mpsutil.build/com.mbeddr.mpsutil.zip" />
     <mkdir dir="${build.tmp}/deps/mps-multiline/mps-multiline.zip" />
     <unzip src="${artifacts.mps-multiline}/mps-multiline.zip" dest="${build.tmp}/deps/mps-multiline/mps-multiline.zip" />
     <mkdir dir="${build.tmp}/deps/mps-richtext/mps-richtext.zip" />
@@ -204,8 +206,6 @@
     <unzip src="${artifacts.mps-tables}/mps-tables.zip" dest="${build.tmp}/deps/mps-tables/mps-tables.zip" />
     <mkdir dir="${build.tmp}/deps/com.mbeddr.platform.build/com.mbeddr.platform.zip" />
     <unzip src="${artifacts.com.mbeddr.platform.build}/com.mbeddr.platform.zip" dest="${build.tmp}/deps/com.mbeddr.platform.build/com.mbeddr.platform.zip" />
-    <mkdir dir="${build.tmp}/deps/com.mbeddr.mpsutil.build/com.mbeddr.mpsutil.zip" />
-    <unzip src="${artifacts.com.mbeddr.mpsutil.build}/com.mbeddr.mpsutil.zip" dest="${build.tmp}/deps/com.mbeddr.mpsutil.build/com.mbeddr.mpsutil.zip" />
     <mkdir dir="${build.tmp}/deps/com.mbeddr.ext.components/com.mbeddr.ext.components.zip" />
     <unzip src="${artifacts.com.mbeddr.ext.components}/com.mbeddr.ext.components.zip" dest="${build.tmp}/deps/com.mbeddr.ext.components/com.mbeddr.ext.components.zip" />
     <mkdir dir="${build.tmp}/deps/com.mbeddr.debugger.build/com.mbeddr.core.debugger.zip" />
diff --git a/build/com.mbeddr.ext/build-ts-tests.xml b/build/com.mbeddr.ext/build-ts-tests.xml
index 35a4fb869c..c4ee45b797 100644
--- a/build/com.mbeddr.ext/build-ts-tests.xml
+++ b/build/com.mbeddr.ext/build-ts-tests.xml
@@ -129,6 +129,8 @@
   </target>
   
   <target name="fetchDependencies">
+    <mkdir dir="${build.tmp}/deps/com.mbeddr.mpsutil.build/com.mbeddr.mpsutil.zip" />
+    <unzip src="${artifacts.com.mbeddr.mpsutil.build}/com.mbeddr.mpsutil.zip" dest="${build.tmp}/deps/com.mbeddr.mpsutil.build/com.mbeddr.mpsutil.zip" />
     <mkdir dir="${build.tmp}/deps/mps-multiline/mps-multiline.zip" />
     <unzip src="${artifacts.mps-multiline}/mps-multiline.zip" dest="${build.tmp}/deps/mps-multiline/mps-multiline.zip" />
     <mkdir dir="${build.tmp}/deps/mps-richtext/mps-richtext.zip" />
@@ -137,8 +139,6 @@
     <unzip src="${artifacts.mps-tables}/mps-tables.zip" dest="${build.tmp}/deps/mps-tables/mps-tables.zip" />
     <mkdir dir="${build.tmp}/deps/com.mbeddr.platform.build/com.mbeddr.platform.zip" />
     <unzip src="${artifacts.com.mbeddr.platform.build}/com.mbeddr.platform.zip" dest="${build.tmp}/deps/com.mbeddr.platform.build/com.mbeddr.platform.zip" />
-    <mkdir dir="${build.tmp}/deps/com.mbeddr.mpsutil.build/com.mbeddr.mpsutil.zip" />
-    <unzip src="${artifacts.com.mbeddr.mpsutil.build}/com.mbeddr.mpsutil.zip" dest="${build.tmp}/deps/com.mbeddr.mpsutil.build/com.mbeddr.mpsutil.zip" />
     <mkdir dir="${build.tmp}/deps/com.mbeddr.core.build/com.mbeddr.core.zip" />
     <unzip src="${artifacts.com.mbeddr.core.build}/com.mbeddr.core.zip" dest="${build.tmp}/deps/com.mbeddr.core.build/com.mbeddr.core.zip" />
     <mkdir dir="${build.tmp}/deps/com.mbeddr.debugger.build/com.mbeddr.core.debugger.zip" />
diff --git a/code/applications/tutorial/languages/complex/languageModels/behavior.mps b/code/applications/tutorial/languages/complex/languageModels/behavior.mps
index 6da0f055ec..39e2700e96 100644
--- a/code/applications/tutorial/languages/complex/languageModels/behavior.mps
+++ b/code/applications/tutorial/languages/complex/languageModels/behavior.mps
@@ -3,5 +3,31 @@
   <persistence version="8" />
   <language namespace="af65afd8-f0dd-4942-87d9-63a55f2a9db1(jetbrains.mps.lang.behavior)" />
   <devkit namespace="fbc25dd2-5da4-483a-8b19-70928e1b62d7(jetbrains.mps.devkit.general-purpose)" />
+  <import index="d47x" modelUID="r:67780e06-1d33-4077-a6c9-86b0b425435c(mbeddr.tutorial.complex.structure)" version="0" implicit="yes" />
+  <import index="tpck" modelUID="r:00000000-0000-4000-0000-011c89590288(jetbrains.mps.lang.core.structure)" version="0" implicit="yes" />
+  <import index="tpee" modelUID="r:00000000-0000-4000-0000-011c895902ca(jetbrains.mps.baseLanguage.structure)" version="4" implicit="yes" />
+  <import index="1i04" modelUID="r:3270011d-8b2d-4938-8dff-d256a759e017(jetbrains.mps.lang.behavior.structure)" version="-1" implicit="yes" />
+  <import index="ywuz" modelUID="r:c6ce92e7-5a98-4a6f-866a-ec8b9e945dd8(com.mbeddr.core.expressions.behavior)" version="5" implicit="yes" />
+  <root type="1i04.ConceptBehavior" typeId="1i04.1225194240794" id="1062496678962771747" nodeInfo="ng">
+    <link role="concept" roleId="1i04.1225194240799" targetNodeId="d47x.8652997886963748611" resolveInfo="ComplexType" />
+    <node role="constructor" roleId="1i04.1225194240801" type="1i04.ConceptConstructorDeclaration" typeId="1i04.1225194413805" id="1062496678962771748" nodeInfo="nn">
+      <node role="body" roleId="tpee.1137022507850" type="tpee.StatementList" typeId="tpee.1068580123136" id="1062496678962771749" nodeInfo="sn" />
+    </node>
+    <node role="method" roleId="1i04.1225194240805" type="1i04.ConceptMethodDeclaration" typeId="1i04.1225194472830" id="1062496678962771801" nodeInfo="ng">
+      <property name="name" nameId="tpck.1169194664001" value="getUsedBytes" />
+      <property name="isVirtual" nameId="1i04.1225194472832" value="false" />
+      <property name="isAbstract" nameId="1i04.1225194472834" value="false" />
+      <link role="overriddenMethod" roleId="1i04.1225194472831" targetNodeId="ywuz.6941595764870551407" resolveInfo="getUsedBytes" />
+      <node role="visibility" roleId="tpee.1178549979242" type="tpee.PublicVisibility" typeId="tpee.1146644602865" id="1062496678962771802" nodeInfo="nn" />
+      <node role="body" roleId="tpee.1068580123135" type="tpee.StatementList" typeId="tpee.1068580123136" id="1062496678962771805" nodeInfo="sn">
+        <node role="statement" roleId="tpee.1068581517665" type="tpee.ExpressionStatement" typeId="tpee.1068580123155" id="1062496678962771812" nodeInfo="nn">
+          <node role="expression" roleId="tpee.1068580123156" type="tpee.IntegerConstant" typeId="tpee.1068580320020" id="1062496678962771811" nodeInfo="nn">
+            <property name="value" nameId="tpee.1068580320021" value="0" />
+          </node>
+        </node>
+      </node>
+      <node role="returnType" roleId="tpee.1068580123133" type="tpee.IntegerType" typeId="tpee.1070534370425" id="1062496678962771806" nodeInfo="in" />
+    </node>
+  </root>
 </model>
 
diff --git a/code/applications/tutorial/languages/vectors/languageModels/behavior.mps b/code/applications/tutorial/languages/vectors/languageModels/behavior.mps
index 4a056831fd..9dc951e059 100644
--- a/code/applications/tutorial/languages/vectors/languageModels/behavior.mps
+++ b/code/applications/tutorial/languages/vectors/languageModels/behavior.mps
@@ -9,7 +9,7 @@
   <import index="tpee" modelUID="r:00000000-0000-4000-0000-011c895902ca(jetbrains.mps.baseLanguage.structure)" version="4" implicit="yes" />
   <import index="tpcu" modelUID="r:00000000-0000-4000-0000-011c89590282(jetbrains.mps.lang.core.behavior)" version="-1" implicit="yes" />
   <import index="1i04" modelUID="r:3270011d-8b2d-4938-8dff-d256a759e017(jetbrains.mps.lang.behavior.structure)" version="-1" implicit="yes" />
-  <import index="ywuz" modelUID="r:c6ce92e7-5a98-4a6f-866a-ec8b9e945dd8(com.mbeddr.core.expressions.behavior)" version="3" implicit="yes" />
+  <import index="ywuz" modelUID="r:c6ce92e7-5a98-4a6f-866a-ec8b9e945dd8(com.mbeddr.core.expressions.behavior)" version="5" implicit="yes" />
   <root type="1i04.ConceptBehavior" typeId="1i04.1225194240794" id="5509345450571583275" nodeInfo="ng">
     <property name="virtualPackage" nameId="tpck.1193676396447" value="vectors" />
     <link role="concept" roleId="1i04.1225194240799" targetNodeId="vj37.5509345450571525116" resolveInfo="VectorType" />
@@ -131,6 +131,19 @@
         <link role="concept" roleId="tp25.1138405853777" targetNodeId="vj37.1090431670134051260" resolveInfo="IMatrixType" />
       </node>
     </node>
+    <node role="method" roleId="1i04.1225194240805" type="1i04.ConceptMethodDeclaration" typeId="1i04.1225194472830" id="1062496678961968459" nodeInfo="ng">
+      <property name="name" nameId="tpck.1169194664001" value="getUsedBytes" />
+      <link role="overriddenMethod" roleId="1i04.1225194472831" targetNodeId="ywuz.6941595764870551407" resolveInfo="getUsedBytes" />
+      <node role="body" roleId="tpee.1068580123135" type="tpee.StatementList" typeId="tpee.1068580123136" id="1062496678961968462" nodeInfo="sn">
+        <node role="statement" roleId="tpee.1068581517665" type="tpee.ExpressionStatement" typeId="tpee.1068580123155" id="1062496678961968852" nodeInfo="nn">
+          <node role="expression" roleId="tpee.1068580123156" type="tpee.IntegerConstant" typeId="tpee.1068580320020" id="1062496678961968851" nodeInfo="nn">
+            <property name="value" nameId="tpee.1068580320021" value="0" />
+          </node>
+        </node>
+      </node>
+      <node role="returnType" roleId="tpee.1068580123133" type="tpee.IntegerType" typeId="tpee.1070534370425" id="1062496678961968847" nodeInfo="in" />
+      <node role="visibility" roleId="tpee.1178549979242" type="tpee.PublicVisibility" typeId="tpee.1146644602865" id="1062496678961968848" nodeInfo="nn" />
+    </node>
   </root>
   <root type="1i04.ConceptBehavior" typeId="1i04.1225194240794" id="6806526014021387643" nodeInfo="ng">
     <property name="virtualPackage" nameId="tpck.1193676396447" value="matrix" />
@@ -281,6 +294,19 @@
         <link role="concept" roleId="tp25.1138405853777" targetNodeId="vj37.1090431670134051260" resolveInfo="IMatrixType" />
       </node>
     </node>
+    <node role="method" roleId="1i04.1225194240805" type="1i04.ConceptMethodDeclaration" typeId="1i04.1225194472830" id="1062496678961964826" nodeInfo="ng">
+      <property name="name" nameId="tpck.1169194664001" value="getUsedBytes" />
+      <link role="overriddenMethod" roleId="1i04.1225194472831" targetNodeId="ywuz.6941595764870551407" resolveInfo="getUsedBytes" />
+      <node role="body" roleId="tpee.1068580123135" type="tpee.StatementList" typeId="tpee.1068580123136" id="1062496678961964829" nodeInfo="sn">
+        <node role="statement" roleId="tpee.1068581517665" type="tpee.ExpressionStatement" typeId="tpee.1068580123155" id="1062496678961965634" nodeInfo="nn">
+          <node role="expression" roleId="tpee.1068580123156" type="tpee.IntegerConstant" typeId="tpee.1068580320020" id="1062496678961965633" nodeInfo="nn">
+            <property name="value" nameId="tpee.1068580320021" value="0" />
+          </node>
+        </node>
+      </node>
+      <node role="returnType" roleId="tpee.1068580123133" type="tpee.IntegerType" typeId="tpee.1070534370425" id="1062496678961965629" nodeInfo="in" />
+      <node role="visibility" roleId="tpee.1178549979242" type="tpee.PublicVisibility" typeId="tpee.1146644602865" id="1062496678961965630" nodeInfo="nn" />
+    </node>
     <node role="constructor" roleId="1i04.1225194240801" type="1i04.ConceptConstructorDeclaration" typeId="1i04.1225194413805" id="6806526014021387644" nodeInfo="nn">
       <node role="body" roleId="tpee.1137022507850" type="tpee.StatementList" typeId="tpee.1068580123136" id="6806526014021387645" nodeInfo="sn" />
     </node>