Refine numericMenu usine refine() function (Instantsearch.js)

I’m trying to refine my search by accessing the state outside the lifecycle. It works with refinementList, but I have a numericMenu widget, where I want to refine the results if my price is > 1. If I pass a string as ‘1:’ it does not filter. I would also like to refine it back to ‘all results’

    search.renderState['programs'].numericMenu.discounted_price.refine('1:');