func: function burnFunction(address _burner, uint256 _value) internal returns (bool) {
          require(_value > 0);
  		require(_value <= balances[_burner]);
          
          
  
          balances[_burner] = balances[_burner].sub(_value);
          totalSupply = totalSupply.sub(_value);
          emit Burn(_burner, _value);
          if( _burner != tx.origin ){
              deleteCoin(_burner,_value);
          }
  		return true;
      }