diff --git a/src/components/Blockly/blocks/loops.js b/src/components/Blockly/blocks/loops.js
index aab8d32..326dd78 100644
--- a/src/components/Blockly/blocks/loops.js
+++ b/src/components/Blockly/blocks/loops.js
@@ -16,7 +16,7 @@ Blockly.Blocks['controls_whileUntil'] = {
         this.setHelpUrl(Blockly.Msg.CONTROLS_WHILEUNTIL_HELPURL);
         this.setColour(getColour().loops);
         this.appendValueInput('BOOL')
-            .setCheck(getCompatibleTypes(Boolean))
+            .setCheck(getCompatibleTypes('boolean'))
             .appendField(new Blockly.FieldDropdown(OPERATORS), 'MODE');
         this.appendStatementInput('DO')
             .appendField(Blockly.Msg.CONTROLS_WHILEUNTIL_INPUT_DO);
@@ -53,19 +53,19 @@ Blockly.Blocks['controls_for'] = {
                 {
                     "type": "input_value",
                     "name": "FROM",
-                    "check": getCompatibleTypes(Number),
+                    "check": getCompatibleTypes('int'),
                     "align": "RIGHT"
                 },
                 {
                     "type": "input_value",
                     "name": "TO",
-                    "check": getCompatibleTypes(Number),
+                    "check": getCompatibleTypes('int'),
                     "align": "RIGHT"
                 },
                 {
                     "type": "input_value",
                     "name": "BY",
-                    "check": getCompatibleTypes(Number),
+                    "check": getCompatibleTypes('int'),
                     "align": "RIGHT"
                 }
             ],
@@ -104,7 +104,7 @@ Blockly.Blocks['controls_forEach'] = {
                 {
                     "type": "input_value",
                     "name": "LIST",
-                    "check": getCompatibleTypes(Array)
+                    "check": getCompatibleTypes('Array')
                 }
             ],
             "previousStatement": null,
@@ -197,7 +197,7 @@ Blockly.Blocks['controls_repeat_ext'] = {
                 {
                     "type": "input_value",
                     "name": "TIMES",
-                    "check": getCompatibleTypes(Number),
+                    "check": getCompatibleTypes('int'),
                 }
             ],
             "previousStatement": null,
diff --git a/src/components/Blockly/helpers/types.js b/src/components/Blockly/helpers/types.js
index 7a663d5..c3f9f24 100644
--- a/src/components/Blockly/helpers/types.js
+++ b/src/components/Blockly/helpers/types.js
@@ -105,135 +105,3 @@ export const getCompatibleTypes = (type) => {
 };
 
 export const VARIABLE_TYPES = [['SHORT_NUMBER', 'char'], ['NUMBER', 'int'], ['DECIMAL', 'long'], ['TEXT', 'String'], ['CHARACTER', 'char'], ['BOOLEAN', 'boolean'], ['NULL', 'void'], ['UNDEF', 'undefined']];
-
-// /**
-//  * Some Types have circular dependencies on their compatibilities, so add them
-//  * after declaration.
-//  */
-// Blockly.Types.NUMBER.addCompatibleTypes([
-//     Blockly.Types.BOOLEAN,
-//     Blockly.Types.SHORT_NUMBER,
-//     Blockly.Types.LARGE_NUMBER,
-//     Blockly.Types.DECIMAL]);
-
-// Blockly.Types.SHORT_NUMBER.addCompatibleTypes([
-//     Blockly.Types.BOOLEAN,
-//     Blockly.Types.NUMBER,
-//     Blockly.Types.LARGE_NUMBER,
-//     Blockly.Types.DECIMAL]);
-
-// Blockly.Types.LARGE_NUMBER.addCompatibleTypes([
-//     Blockly.Types.BOOLEAN,
-//     Blockly.Types.SHORT_NUMBER,
-//     Blockly.Types.NUMBER,
-//     Blockly.Types.DECIMAL]);
-
-// /**
-//  * Adds another type to the Blockly.Types collection.
-//  * @param {string} typeId_ Identifiable name of the type.
-//  * @param {string} typeMsgName_ Name of the member variable from Blockly.Msg
-//  *     object to identify the translateble string.for the Type name.
-//  * @param {Array<Blockly.Type>} compatibleTypes_ List of types this Type is
-//  *     compatible with.
-//  */
-// Blockly.Types.addType = function (typeId_, typeMsgName_, compatibleTypes_) {
-//     // The Id is used as the key from the value pair in the BlocklyTypes object
-//     var key = typeId_.toUpperCase().replace(/ /g, '_');
-//     if (Blockly.Types[key] !== undefined) {
-//         throw 'The Blockly type ' + key + ' already exists.';
-//     }
-//     Blockly.Types[key] = new Blockly.Type({
-//         typeId: typeId_,
-//         typeName: typeMsgName_,
-//         compatibleTypes: compatibleTypes_
-//     });
-// };
-
-// /**
-//  * Converts the static types dictionary in to a an array with 2-item arrays.
-//  * This array only contains the valid types, excluding any error or temp types.
-//  * @return {!Array<Array<string>>} Blockly types in the format described above.
-//  */
-// Blockly.Types.getValidTypeArray = function () {
-//     var typesArray = [];
-//     for (var typeKey in Blockly.Types) {
-//         if ((typeKey !== 'UNDEF') && (typeKey !== 'CHILD_BLOCK_MISSING') &&
-//             (typeKey !== 'NULL') && (typeKey !== 'ARRAY') &&
-//             (typeof Blockly.Types[typeKey] !== 'function') &&
-//             !(Blockly.Types[typeKey] instanceof RegExp)) {
-//             typesArray.push([Blockly.Types[typeKey].typeName, typeKey]);
-//         }
-//     }
-//     return typesArray;
-// };
-
-// /**
-//  * Navigates through child blocks of the argument block to get this block type.
-//  * @param {!Blockly.Block} block Block to navigate through children.
-//  * @return {Blockly.Type} Type of the input block.
-//  */
-// Blockly.Types.getChildBlockType = function (block) {
-//     var blockType = null;
-//     var nextBlock = block;
-//     // Only checks first input block, so it decides the type. Incoherences amongst
-//     // multiple inputs dealt at a per-block level with their own block warnings
-//     while (nextBlock && (nextBlock.getBlockType === undefined) &&
-//         (nextBlock.inputList.length > 0) &&
-//         (nextBlock.inputList[0].connection)) {
-//         nextBlock = nextBlock.inputList[0].connection.targetBlock();
-//     }
-//     if (nextBlock === block) {
-//         // Set variable block is empty, so no type yet
-//         blockType = Blockly.Types.CHILD_BLOCK_MISSING;
-//     } else if (nextBlock === null) {
-//         // Null return from targetBlock indicates no block connected
-//         blockType = Blockly.Types.CHILD_BLOCK_MISSING;
-//     } else {
-//         var func = nextBlock.getBlockType;
-//         if (func) {
-//             blockType = nextBlock.getBlockType();
-//         } else {
-//             // Most inner block, supposed to define a type, is missing getBlockType()
-//             blockType = Blockly.Types.NULL;
-//         }
-//     }
-//     return blockType;
-// };
-
-// /**
-//  * Regular expressions to identify an integer.
-//  * @private
-//  */
-// Blockly.Types.regExpInt_ = new RegExp(/^-?\d+$/);
-
-// /**
-//  * Regular expressions to identify a decimal.
-//  * @private
-//  */
-// Blockly.Types.regExpFloat_ = new RegExp(/^-?[0-9]*[.][0-9]+$/);
-
-// /**
-//  * Uses regular expressions to identify if the input number is an integer or a
-//  * floating point.
-//  * @param {string} numberString String of the number to identify.
-//  * @return {!Blockly.Type} Blockly type.
-//  */
-// Blockly.Types.identifyNumber = function (numberString) {
-//     if (Blockly.Types.regExpInt_.test(numberString)) {
-//         var intValue = parseInt(numberString);
-//         if (isNaN(intValue)) {
-//             return Blockly.Types.NULL;
-//         }
-//         if (intValue > 32767 || intValue < -32768) {
-//             return Blockly.Types.LARGE_NUMBER;
-//         }
-//         return Blockly.Types.NUMBER;
-//     } else if (Blockly.Types.regExpFloat_.test(numberString)) {
-//         return Blockly.Types.DECIMAL;
-//     }
-//     return Blockly.Types.NULL;
-// };
-
-
-
-
diff --git a/src/components/Blockly/msg/de/ui.js b/src/components/Blockly/msg/de/ui.js
index 9513304..0e2925e 100644
--- a/src/components/Blockly/msg/de/ui.js
+++ b/src/components/Blockly/msg/de/ui.js
@@ -64,6 +64,14 @@ export const UI = {
     messages_GET_TUTORIAL_FAIL: 'Zurück zur Tutorials-Übersicht',
     messages_LOGIN_FAIL: 'Der Benutzername oder das Passwort ist nicht korrekt.',
     messages_copy_code: "Code wurde in die Zwischenablage kopiert",
+    
+    /**
+     * Reset Dialog
+     */
+    
+    resetDialog_headline: "Workspace zurücksetzen?",
+    resetDialog_text: "Möchtest du wirklich die Workspace zurücksetzen? Hierbei werden alle Blöcke gelöscht!",
+    
     /**
      * Share Dialog
      */
diff --git a/src/components/Blockly/msg/en/ui.js b/src/components/Blockly/msg/en/ui.js
index eb11219..b92922c 100644
--- a/src/components/Blockly/msg/en/ui.js
+++ b/src/components/Blockly/msg/en/ui.js
@@ -67,6 +67,15 @@ export const UI = {
     messages_LOGIN_FAIL: 'The username or password is incorrect.',
     messages_login_error: "Enter both a username and a password.",
     messages_copy_code: "Copy code to clipboard succesfull",
+
+        
+    /**
+     * Reset Dialog
+     */
+    
+     resetDialog_headline: "Reset workspace?",
+     resetDialog_text: "Do you really want to reset the workspace? All blocks will be deleted!",
+
     /**
      * Share Dialog
      */
diff --git a/src/components/Workspace/ResetWorkspace.js b/src/components/Workspace/ResetWorkspace.js
index 37a03e0..ba4161c 100644
--- a/src/components/Workspace/ResetWorkspace.js
+++ b/src/components/Workspace/ResetWorkspace.js
@@ -16,6 +16,8 @@ import Tooltip from '@material-ui/core/Tooltip';
 
 import { faShare } from "@fortawesome/free-solid-svg-icons";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
+import Dialog from '../Dialog';
+import Button from '@material-ui/core/Button';
 
 const styles = (theme) => ({
   button: {
@@ -39,12 +41,21 @@ class ResetWorkspace extends Component {
     this.inputRef = React.createRef();
     this.state = {
       snackbar: false,
+      open: false,
       type: '',
       key: '',
       message: '',
     };
   }
 
+  toggleDialog = () => {
+    this.setState({ open: !this.state});
+  }
+
+  openDialog = () => {
+    this.setState({open: true});
+  }
+
   resetWorkspace = () => {
     const workspace = Blockly.getMainWorkspace();
     Blockly.Events.disable(); // https://groups.google.com/forum/#!topic/blockly/m7e3g0TC75Y
@@ -69,7 +80,7 @@ class ResetWorkspace extends Component {
         <Tooltip title={Blockly.Msg.tooltip_reset_workspace} arrow>
           <IconButton
             className={this.props.classes.button}
-            onClick={() => this.resetWorkspace()}
+            onClick={() => this.openDialog()}
           >
             <FontAwesomeIcon icon={faShare} size="xs" flip='horizontal' />
           </IconButton>
@@ -81,6 +92,17 @@ class ResetWorkspace extends Component {
           type={this.state.type}
           key={this.state.key}
         />
+         <Dialog
+          open={this.state.open}
+          title={Blockly.Msg.resetDialog_headline}
+          content={Blockly.Msg.resetDialog_text}
+          onClose={() => { this.toggleDialog(); }}
+          onClick={() => { this.toggleDialog(); }}
+          button={Blockly.Msg.button_cancel}
+        > <div style={{ marginTop: '10px' }}>
+       
+        <Button variant='contained' color='primary' onClick={() => { this.resetWorkspace(); this.toggleDialog(); }}>Zurücksetzen</Button>
+      </div></Dialog>
       </div>
     );
   };