BoundHelper for Handlebars blocks

I updated Handlebars to 2.0.0 version and got deprecation:

Usage of Ember.Handlebars.get is deprecated, use a Component or Ember.Handlebars.makeBoundHelper instead. 

After rewrite code using BoundHelper:

registerBoundHelper-generated helpers do not support use with Handlebars blocks.

How to to write handlebars blocks helpers without this deprecations.

helpers look like this:

export default function(lvalue, rvalue, options) {
    lvalue = Ember.Handlebars.get(this,lvalue, options);
    rvalue = Ember.Handlebars.get(this,rvalue, options);
    //logic with lvalue and rvalue 
}