Getting values of Bollinger Bands

Hi, I had a question I couldn't figure out. New to MT4.

I have attached the Bollinger Bands to my chart. I want to retrieve the upper and lower values in an EA.

Do I have to copy the entire indicator code into the EA or is there a function to retrieve the values from an attached indicator?

Just in case anyone is curious. I did figure it out....

// Bollinger Widths
upperband = iBands(NULL, 0, BandsPeriod, BandsDeviations, 0, PRICE_CLOSE,MODE_UPPER,0);
lowerband = iBands(NULL, 0, BandsPeriod, BandsDeviations, 0, PRICE_CLOSE,MODE_LOWER,0);
banddifference = upperband-lowerband;

Can anyone tell me how i can get an alert when price punches through the Bollanger Bands at any Timeframe. Would like to have that alert

Also any information on how to get a stochastic signal when they cross with any values selected?

Thanks