XZ Region Selector Instantly Fails

So I’m trying to create a new box selector, much like the harvest tool, but when I call this code:

compactify.js:

$(top).one('start_menu_activated', function () {

  App.stonehearthClient.compactify = function (){
	var tip = this.showTip('compactify:ui.compactify_tool.tip_title',
	      'compactify:ui.compactify_tool.tip_description', {i18n : true});

	return this._callTool('boxHarvestResources', function() {
	   return radiant.call('compactify:box_compactify')
	      .done(function(response) {
	         radiant.call('radiant:play_sound', {'track' : 'stonehearth:sounds:ui:start_menu:popup'} );
	      })
	      .fail(function(response) {
	         App.stonehearthClient.hideTip(tip);
	      });
	});
};

	var compactifyZoneElem = $('#compactify_zone');
   	compactifyZoneElem.on('click', function(e){
       App.stonehearthClient.compactify();
    });
});

compactify_call_handler.lua:
stonehearth.selection:select_xz_region('box_compactify')
  :set_find_support_filter(function(result)
        if self:_is_ground(result.entity) then
           return true
        end
        return stonehearth.selection.FILTER_IGNORE
     end)
  :done(function(selector, box)
        _radiant.call('compactify:server_box_compactify', box)
        response:resolve(true)
     end)
  :fail(function(selector)
        response:reject('no region')
     end)
  :go()

I know the code gets reach because I can output the response to console through js. However, for the life of me I cannot debug the reason as to why it automatically fail()s. From what I can discern, it calls SelectionService:deactivate_all_tools() -> tool:destroy() automatically, so I get no change to drag the region.

Anyone know how to help??

Still hoping someone has some info on this :frowning: Anyone successfully made their own selector tool?

all I know is selecting stuff is weird atm because the game actually makes a distinction between the ground and blocks on the ground. so if you are trying to select something that is on the ground but is a floor or a road it will not work. not sure if this also effects other things as well