function TakePrize(uint256 _id) public onlyOpen{
        require(_id < next_tower_index);
        var UsedTower = Towers[_id];
        require(UsedTower.timestamp > 0); 
        var Timing = getTimer(_id);
        if (block.timestamp > (add(UsedTower.timestamp,  Timing))){
            Payout_intern(_id);
        }
        else{
            revert();
        }
    }