laravel - Getting Empty Collection From A Query -

i have query:

$amount = input::get('amount'); // first getting age range input in html (name="amount").         $amount = str_replace(' ','',$amount); //remove blank spaces between ages value, if there's any.         $amount = explode('-',$amount); // breaking value 16-45, 16 , 45, '-' being breaking point. , turns value array.          // getting array value index 0 , 1.         $min = $amount[0];         $max = $amount[1];          $user = $request->user();         $userselect = input::get('select_preferences');         $prefquery = profile::wherehas('expectations', function($query) use($userselect) {         $query->wherein('name', $userselect); // first query: compare name column in expectations table user selection.         //now chain query:         })->wherebetween('age', [$min,$max])             ->with('user', 'expectations')->get(); 

i trying user selection , age range. when running dump($prefquery); - getting empty collection:

collection {#192 ▼   #items: [] } 

here's profile model being queried:

<?php  namespace app;  use illuminate\database\eloquent\model;  class profile extends model {   protected $table = 'profiles';    protected $fillable = ['gender','age','goals','activitytype'];     /**    * profile belongs many expectations    * @return illuminate\database\eloquent\relations\belongstomany    */   public function expectations()   {       return $this->belongstomany('app\expectation');   }    /**    * profile belong user    * @return illuminate\database\eloquent\relations\belongsto    */   public function user()   {     return $this->belongsto('app\user'); //belongsto relationship profile model user model.   } } 

why getting empty collection although making widest search possible?