<ion-select [(ngModel)]="refine" (ionChange)="optionsFn();">
            <ion-option value="..." *ngFor="let item of date">{{item["@NAME"]}},({{item["@COUNT"]}})</ion-option>
          </ion-select>
<ion-list>
          <ion-item *ngFor="let item of foundRepos" (click)="itemClicked($event,item)">
            <h3> {{ item[@KEY"] }}</h3>
          </ion-item>
        </ion-list>

this.http.get("my_url")
                        .subscribe(data =>{
                                 this.date=data.json().RESULT.FACET; //get @NAME
                        },error=>{
                            err => console.error(err),
                           () => console.log('getRepos completed')
            );
        console.log(this.date);

      }

     optionsFn(): void {

       this.http.get("my_url")
                        .subscribe(data =>{
                                 this.foundRepos=data.json().RESULT.FACET[0,1,2,3.4......].FACET_VALUES; ///get @KEY
                        },error=>{
                            console.log(error);
                        } );

      }