Question: I'm currently facing an issue in updating a value in the DOM.

To explain it quickly and as simple as possible, I currently have two components (A and B). B inherits from A, uses A's view as template but also inject its template into A (ng-content) so B's view is like:

```
<A>
   <template>
      <div *ngFor="let item of items" (click)="selected($event, item)">
          <span>{{item.name}}<span>
      </div>
   </template>
</A>

```

And A's view is like :

```
<ng-content select="template"></ng-content>
<div *ngIf="searching">Hey I'm looking for answer</div>
<div *ngIf="!searching">I already have my answer</div>

```

The component B has only one private variable which is the array of items and A's component has one specific method called by B which is :

```
private searching: boolean = true;

selected(event, value: any): void {
   event.stopPropagation();
   this.searching = false; // This.searching is updated in component but not in DOM
   this.selectedItem = value; // BUT this.selectedItem is updated in component AND in DOM !!
}

```

Changing this.selectedItem works, but this.searching doesn't therefore only "Yes" is displayed since searching is always TRUE.

Here is the [plunkr](https://plnkr.co/edit/DP7K5Q63kEqXmQbRA98I?p=preview).

Can someone enlighten me please ? Thank you.

Answer: 
Few things. 

Which operating system are you using **32-bit** or **64-bit**? 

1. make sure the driver (gecko or chrome any other) you have downloaded is as per your operating system.
2. Try to run them from command line to see what's happening.
3. if you are using linux, make sure driver has proper permission
1- download latest firefox or chrome driver  

2- please update your selenium server dependency, it seems your selenium stand-alone.jar is not compatible with your browser version.
download selenium server latest jar from [here](http://www.seleniumhq.org/download/)
or add below maven dependency in your POM

```
<dependency>
        <groupId>org.seleniumhq.selenium</groupId>
        <artifactId>selenium-server</artifactId>
        <version>3.4.0</version>
    </dependency>

```

please let me know if it solve your issue : )