fixed class name value

package-lock.json

@@ -6630,7 +6630,8 @@
             },
             "ansi-regex": {
               "version": "2.1.1",
-              "bundled": true
+              "bundled": true,
+              "optional": true
             },
             "aproba": {
               "version": "1.2.0",
@@ -6995,7 +6996,8 @@
             },
             "safe-buffer": {
               "version": "5.1.2",
-              "bundled": true
+              "bundled": true,
+              "optional": true
             },
             "safer-buffer": {
               "version": "2.1.2",
@@ -7043,6 +7045,7 @@
             "strip-ansi": {
               "version": "3.0.1",
               "bundled": true,
+              "optional": true,
               "requires": {
                 "ansi-regex": "^2.0.0"
               }
@@ -7081,11 +7084,13 @@
             },
             "wrappy": {
               "version": "1.0.2",
-              "bundled": true
+              "bundled": true,
+              "optional": true
             },
             "yallist": {
               "version": "3.0.3",
-              "bundled": true
+              "bundled": true,
+              "optional": true
             }
           }
         }

src/jsx/main.jsx

@@ -161,7 +161,7 @@ export class Main extends React.Component{
                         <select className="select-wrapper" onChange={this.selCh} value={this.state.selected}  title="Gruppe auswählen"> 
                             <option value="-">-</option>
                             {this.state.classes.map((cl,i)=>
-                            <option value={cl.toLowerCase()}>{cl.toUpperCase()}</option>  
+                            <option value={cl}>{cl.toUpperCase()}</option>  
                             )}
                         </select>
                     </div>