title: Add Nested Reactive FormArray within FormArray - Angular 6
body: <p>I am attempting to add multiple inputs inside of a table row using nested Reactive Forms in Angular 6. I am having trouble pushing to a Form Array within a Form Array in typescript. I have added my full code (including a dummy service to pull in data) to a stackblitz <a href="https://stackblitz.com/edit/angular-7ewxe5" rel="nofollow noreferrer">here</a></p>
  
  <p>How can I implement adding to the productCombination form array inside of my <code>addProductCombination()</code> method. The desired behavior is that the table row in which the 'plus' button is clicked will have a new select/input element for each form control inside of my productCombination FormArray. Any help is much appreciated.</p>