bugs and no $ in money

src/model/Workshop.ts

@@ -60,7 +60,7 @@ export class Workshop implements Lockable {
     @JoinColumn({
         name: 'trainer2Id'
     })
-    trainer2: Participant;
+    trainer2Id: number;
 
     @Column({
         nullable: true,

src/resolvers/cargoBikeResolver.ts

@@ -230,6 +230,11 @@ export default {
         isLockedByMe: (parent: any, __: any, { req }: { req: any }) => isLockedByMe(parent, { req }),
         isLocked: (parent: any, __: any, { req }: { req: any }) => isLocked(parent, { req })
     },
+    InsuranceData: {
+        projectAllowance: (parent: any): any => {
+            return (parent as string)?.replace(/€\$/, '');
+        }
+    },
     Mutation: {
         createCargoBike: (_: any, { cargoBike }: { cargoBike: any }, { dataSources, req }: { dataSources: any, req: any }) => {
             if (req.permissions.includes(Permission.WriteBike)) {