Upsert block to update a facet

Users
1

is it possible to update a facet in upsert block?
the following example is failing

  mutation @if(eq(len(r), 1)) 
  {
    set
    {
    <0x2714> <widget.title> <0x271b> (**rel_count=value(rel_count_sum),** time_min="2021-07-28T11:43:23+00:00", time_max="2021-07-28T11:43:23+00:00") .
    }
  }
2

No, it is not. Everytime you upsert the edge, you will overwrite the old facets. No value variable or any other feature is available for facets writing.

PS. There are some tickets already opened to track this.

Cheers.