IB request historical data error

Hello, I'm trying to create a timer object to continuously call history function in trading toolbox @ibtws so that I can collect enough trading data and avoid IB data request restriction issue, yet error pops out as "You cannot set the 'DataRequest' property of ibtws." I wonder if there's a better way to send data request to IB without violating data restriction. Thank you.

I've attached my code here.

ib = ibtws('',7496)
ibContract = ib.Handle.createContract;
ibContract.symbol = 'ABX';
ibContract.currency = 'USD';
ibContract.secType = 'STK';
ibContract.exchange = 'SMART';

startDate = floor(now) - 5;
endDate = floor(now) - 4;
period = '1 min';
tradehours = 1;
ticktype = 'TRADES';
e.ib = ib;
e.Contract = ibContract;
e.startDate = startDate;
e.endDate = endDate;
e.tradehours = tradehours;
e.period = period;
e.ticktype = ticktype;
e.stockInfo = [];

ibTimer = timer('ExecutionMode','singleShot',...
                'Period',2,'TimerFcn',@ibHist);
set(ibTimer,'UserData',e);

start(ibTimer);           
stop(ibTimer);
delete(ibTimer)

function ibHist(obj,~)

message = obj.UserData;
fun = @history;

ib = message.ib;
ibContract = message.Contract;
startDate = message.startDate;
endDate = message.endDate;
ticktype = message.ticktype;
period = message.period;
tradehours = message.tradehours;

ibData = fun(ib,ibContract,startDate,endDate,ticktype,period,tradehours);

message.stockInfo = ibData;
set(obj,'UserData',message);

end