how to create global filter that filter on greater then (>) and not on equal to (=) ?

[sapirkri]

I want to use global filter in my dashboard in a different way  

I want to  show in the filter options the available scores (A - F) but in the query to filter greater  then (>)  and not equal (=)

any way I can do it without using suggest_dimension? 

the upgrade dashboard filter has a bug when using the suggest_dimension in the global filter . 

the code below works but I can only use it in the legacy dashboards: 

  filter: remidation_scope {
    type: string
    suggest_dimension: rating
    sql:  ${rating}  > {% parameter remidation_scope %};;

  }

thanks