Select is not working for negative value string

[rahul-uttarkar]

I am using below html code

<td> <div style="display:table-cell;"> <b>Noon Time Zone:</b>&nbsp;&nbsp;UTC <sui-select class="selection" icon="dropdown" style="min-width:76px;border:none;padding-left:2px" placeholder=" " [(ngModel)]="this.currentVersionLogbook.veemsDeckLogbookData1.noonTimeZone" [ngClass]="[(this.trackingMode === true && this.currentVersionLogbook.veemsDeckLogbookData1.noonTimeZone !== this.previousVersionLogbook.veemsDeckLogbookData1.noonTimeZone ) ? 'trackingHighlighter' : '']"> <sui-select-option *ngFor="let itemValue of this.deckLogbookConfigurations?.timeZoneList" value="{{itemValue}}"></sui-select-option> </sui-select> </div> </td>

I am passing array of strings for binding..

Its working for positive string values but binding is not working for negative values (Its showing blank)