diff --git a/externals.d.ts b/externals.d.ts
index e536f2be..c44786c3 100644
--- a/externals.d.ts
+++ b/externals.d.ts
@@ -11,4 +11,4 @@ declare const verb: any;
 declare const FS: any;
 declare const __CAD_APP: any;
 declare const __DEBUG__: any;
-
+declare let out: any;
diff --git a/modules/workbenches/modeler/actions/exportBREP/exportBREP.action.ts b/modules/workbenches/modeler/actions/exportBREP/exportBREP.action.ts
index 7b41e02b..c9d65413 100644
--- a/modules/workbenches/modeler/actions/exportBREP/exportBREP.action.ts
+++ b/modules/workbenches/modeler/actions/exportBREP/exportBREP.action.ts
@@ -15,7 +15,7 @@ export const ExportBREP: any = {
   icon: 'img/cad/extrude',
   info: 'EXPORT BREP FILE CONTAINING SELECTED BODIES',
   path:__dirname,
-  run: async (params: Params, ctx: ApplicationContext) => {
+  run: async (params: any, ctx: ApplicationContext) => {
     console.log("this is it", this)
     const occ = ctx.occService;
     const oci = occ.commandInterface;
@@ -43,7 +43,6 @@ export const ExportBREP: any = {
     resultingMessage = "yay";
 
     throw {userMessage: resultingMessage};
-    return;
   },
 
 
@@ -63,30 +62,24 @@ export const ExportBREP: any = {
   ],
 }
 
-
-
-var downloadBlob, downloadURL;
-
-downloadBlob = function(data, fileName, mimeType) {
-  var blob, url;
-  blob = new Blob([data], {
+function downloadBlob(data, fileName, mimeType) {
+  const blob = new Blob([data], {
     type: mimeType
   });
-  url = window.URL.createObjectURL(blob);
+  const url = window.URL.createObjectURL(blob);
   downloadURL(url, fileName);
   setTimeout(function() {
     return window.URL.revokeObjectURL(url);
   }, 1000);
-};
+}
 
-downloadURL = function(data, fileName) {
-  var a;
-  a = document.createElement('a');
+function downloadURL(data, fileName) {
+  const a = document.createElement('a');
   a.href = data;
   a.id = "MyDownload"
   a.download = fileName;
   document.body.appendChild(a);
-  a.style = 'display: none';
+  a.style.display = 'none';
   a.click();
   a.remove();
-};
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/modules/workbenches/modeler/actions/getInfo/getInfo.action.ts b/modules/workbenches/modeler/actions/getInfo/getInfo.action.ts
index 696396da..6832235d 100644
--- a/modules/workbenches/modeler/actions/getInfo/getInfo.action.ts
+++ b/modules/workbenches/modeler/actions/getInfo/getInfo.action.ts
@@ -1,12 +1,13 @@
 import {MShell} from "cad/model/mshell";
 import {ApplicationContext} from "cad/context";
 import {EntityKind} from "cad/model/entities";
-import {ActionDefinition} from "cad/actions/actionSystemBundle";
 import { MEdge } from "cad/model/medge";
+import NurbsCurve from "geom/curves/nurbsCurve";
 
 
 interface GetInfoParams {
   targetBody: MShell | MEdge;
+  brepEdge: MEdge;
 }
 
 export const GetInfo: any = {
@@ -25,30 +26,30 @@ export const GetInfo: any = {
     let resultingMessage = "";
 
 
-    if (targetBody.TYPE === EntityKind.EDGE){
-      resultingMessage = "Edge Length = "+ targetBody.brepEdge.curve.impl.verb.length().toFixed(4);
+    if (targetBody instanceof MEdge){
+      resultingMessage = "Edge Length = "+ (targetBody.brepEdge.curve.impl as NurbsCurve).verb.length().toFixed(4);
     }
     if (targetBody.TYPE === EntityKind.SHELL){
-      let listOfOutputs = [];
+      const listOfOutputs = [];
+
       const out_old = out;
-      out  = function(msg) {
-        listOfOutputs.push(msg);
+      try {
+        out = function(msg) {
+          listOfOutputs.push(msg);
           //alert(JSON.stringify(msg));
           out_old(msg);
+        }
+
+        oci.vprops(params.targetBody);
+
+      } finally {
+        out = out_old;
       }
-  
-      oci.vprops(params.targetBody);
-  
-      out = out_old;
-  
-      
+
       const resultingVolumeArray = listOfOutputs.filter(function (str) {  return str.includes("Mass") });
       resultingMessage = "Volume = " + resultingVolumeArray[0].trim().replace(' ', '').replace("Mass:","").trim();
     }
 
-
-
-
     throw {userMessage: resultingMessage};
     return;
   },
diff --git a/modules/workbenches/modeler/features/plane/simplePlaneOperation.ts b/modules/workbenches/modeler/features/plane/simplePlaneOperation.ts
index 3b10c407..68b71b35 100644
--- a/modules/workbenches/modeler/features/plane/simplePlaneOperation.ts
+++ b/modules/workbenches/modeler/features/plane/simplePlaneOperation.ts
@@ -1,17 +1,13 @@
-import { createMeshGeometry } from 'scene/geoms';
-import { Plane } from 'geom/impl/plane';
+import {createMeshGeometry} from 'scene/geoms';
+import {Plane} from 'geom/impl/plane';
 import Vector from 'math/vector';
-import { MOpenFaceShell } from '../../../../../web/app/cad/model/mopenFace';
-import { PlaneSurfacePrototype } from '../../../../../web/app/cad/model/surfacePrototype';
+import {MOpenFaceShell} from '../../../../../web/app/cad/model/mopenFace';
+import {PlaneSurfacePrototype} from '../../../../../web/app/cad/model/surfacePrototype';
 import CSys from "math/csys";
-import { EntityKind } from "cad/model/entities";
-import { TextureLoader, MeshBasicMaterial,MeshLambertMaterial, Mesh, DoubleSide, PlaneGeometry } from "three";
-//import THREE from "three";
+import {EntityKind} from "cad/model/entities";
 
 
-
-
-function paramsToPlane({ orientation, datum, depth }, cadRegistry) {
+function paramsToPlane({ orientation, datum, depth }) {
   const csys = datum ? datum.csys : CSys.ORIGIN;
 
   let axis;
@@ -29,8 +25,8 @@ function paramsToPlane({ orientation, datum, depth }, cadRegistry) {
 }
 
 
-function previewGeomProvider(params, {cadRegistry}) {
-  const plane = paramsToPlane(params, cadRegistry);
+function previewGeomProvider(params) {
+  const plane = paramsToPlane(params);
   const tr = plane.get3DTransformation();
   const w = 375, h = 375;
   const a = tr._apply(new Vector(-w, -h, 0));
@@ -65,15 +61,15 @@ export default {
   paramsInfo: ({ depth }) => `(${depth})`,
   previewGeomProvider,
   run: (params, { cadRegistry }) => {
+
     return {
       consumed: [],
-      created: [new MOpenFaceShell(new PlaneSurfacePrototype(paramsToPlane(params, cadRegistry)))]
+      created: [new MOpenFaceShell(new PlaneSurfacePrototype(paramsToPlane(params)))]
     }
   },
   form: [
     {
       type: 'choice',
-      style: "dropdown",
       label: 'orientation',
       name: 'orientation',
       style: 'radio',
@@ -103,7 +99,6 @@ export default {
     //   name: 'image',
     //   optional: true,
     //   label: 'Optional Image',
-
     // },
   ],
 };
diff --git a/web/app/cad/craft/schema/initializeBySchema.ts b/web/app/cad/craft/schema/initializeBySchema.ts
index bf5d1ebb..5b20b166 100644
--- a/web/app/cad/craft/schema/initializeBySchema.ts
+++ b/web/app/cad/craft/schema/initializeBySchema.ts
@@ -48,10 +48,6 @@ export function fillUpMissingFields(params: any, schema: OperationSchema, contex
   for (const field of fields) {
     const md = schema[field] as SchemaField;
 
-    if (md.optional) {
-      continue;
-    }
-
     let val = params[field];
 
     const isPrimitive =
@@ -59,7 +55,7 @@ export function fillUpMissingFields(params: any, schema: OperationSchema, contex
       && md.type !== Types.object
       && md.type !== Types.entity;
 
-    if (isPrimitive && isValueNotProvided(val)) {
+    if (isPrimitive && isValueNotProvided(val) && !md.optional) {
       params[field] = md.defaultValue;
     } else if (md.type === Types.object) {
       if (!val) {
diff --git a/web/app/cad/mdf/ui/BooleanWidget.tsx b/web/app/cad/mdf/ui/BooleanWidget.tsx
index 929e5c60..ddadafcf 100644
--- a/web/app/cad/mdf/ui/BooleanWidget.tsx
+++ b/web/app/cad/mdf/ui/BooleanWidget.tsx
@@ -6,7 +6,8 @@ import {SectionWidgetProps} from "cad/mdf/ui/SectionWidget";
 export interface BooleanWidgetProps extends FieldBasicProps {
 
   type: 'boolean';
-  simplify: boolean | true;
+
+  simplify?: boolean;
 
 }
 
@@ -42,8 +43,7 @@ export const BooleanWidgetDefinition = (props: BooleanWidgetProps) => ({
           name: "simplify",
           label: 'simplify',
           type: "checkbox",
-          defaultValue: true,
-          optional: true,
+          defaultValue: true
         },
         {
           name: "targets",
diff --git a/web/app/cad/mdf/ui/ChoiceWidget.tsx b/web/app/cad/mdf/ui/ChoiceWidget.tsx
index ad0ae21f..ab551d59 100644
--- a/web/app/cad/mdf/ui/ChoiceWidget.tsx
+++ b/web/app/cad/mdf/ui/ChoiceWidget.tsx
@@ -45,7 +45,7 @@ export function ChoiceWidget(props: ChoiceWidgetProps) {
           val = value;
           name = value;
         }
-        return <RadioButton value={val} key={val}>{name}</RadioButton>
+        return <RadioButton value={val} label={name} key={val} />
       })}
     </RadioButtonsField>;
   }
diff --git a/web/app/cad/model/mopenFace.ts b/web/app/cad/model/mopenFace.ts
index 3961630e..94aacc8e 100644
--- a/web/app/cad/model/mopenFace.ts
+++ b/web/app/cad/model/mopenFace.ts
@@ -5,12 +5,15 @@ export class MOpenFaceShell extends MShell {
 
   private surfacePrototype: any;
   
-  constructor(surfacePrototype, csys) {
+  constructor(surfacePrototype, csys?) {
     super();
     this.surfacePrototype = surfacePrototype;
     this.csys = csys;
     this.faces.push(new MFace(this.id + '/SURFACE', this, 
       surfacePrototype.boundTo([], 100, 100), csys));
+    if (!this.csys) {
+      this.csys = this.face.csys;
+    }
   }
   
   get face() {
diff --git a/web/app/cad/model/mshell.ts b/web/app/cad/model/mshell.ts
index 4ffa0b1e..9c704ca1 100644
--- a/web/app/cad/model/mshell.ts
+++ b/web/app/cad/model/mshell.ts
@@ -45,7 +45,6 @@ export class MShell extends MObject {
 export class MBrepShell extends MShell {
 
   brepShell: Shell;
-  csys: CartesianCSys;
   brepRegistry: Map<TopoObject, MObject>;
 
   constructor(shell, csys?) {