function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
        require(_to != address(0));
        var _allowance = allowed[_from][msg.sender];
        allowed[_from][msg.sender] = _allowance.sub(_value); 
        _setBalances(_from, _to, _value);  
        _sendFeesToMasternodes(masternode.transactionRewardInSubtokensRaw1e18);

        Transfer(_from, _to, _value);
        return true;
    }