function release() public {
    require(block.timestamp >= releaseTime);
    
    for (uint i=0;i<beneficial.length;i++ ){
        uint256 amount = token.balanceOf(this);
        require(amount > 0);
        uint256 count = beneficiary[beneficial[i]];
        if (amount>=count){
             beneficiary[beneficial[i]] = 0;
             token.safeTransfer(beneficial[i], count);
        }
    }
  }