<div *ngFor="let CoursesNames$ of CoursesPerPerf$ | async; let j=index; let isOdd2=odd; let isEven2=even" [class.oddin]="isOdd2" [class.evenin]="isEven2" [class.changecolor]="calccolor(CoursesNames$.id,CoursesNames$.categ,CoursesNames$.classes)" [hidden]="SchoolNames$.id !== regionActive" >