@MrFloppy, A lot of thanks, that working perfectly, but it’s not general. I mean when data-desc should be from ngFor , that will give an error “data-desc” in not angular attribute for ion-fab-button, so regarding that, I fix that issue, by generating directive “data-desc” and use it in fab-button component and in the style I add prefix of angular “ng-reflect” to “data-desc” to be “ng-reflect-ng-reflect”.
and that working good.