Dynamic (click) function - Angular 12 is not working for me

I am having a issue with binding a dynamic function to a click event. To more options dynamically. See my below code. ngFor value comes form the API.

    <ng-container  *ngFor="let perm of selectedFile.accessPerms">       
        <li nz-menu-item (click)="this[perm.link]()">{{ perm.title }}</li>     
    </ng-container>                                                      
</ul>``` 

API Response.

```accessPerms: [{opt: "Rename", link: "renameFileFolder"}, {opt: "Remove", link: "showRemoveModal"}]```

Error msg: <img src="https://i.stack.imgur.com/zbwhL.png">