1, open the trader software, find "Formula Management" in "Login/System", click "New" and paste the source code just copied into the specified interface, as shown below:

P 1 (0， 10000，5， 1)；

P2 (0， 10000， 10， 1)；

N(5，300，26)；

P( 1， 100，20)

2. Paste the following source code into the specified interface (see the figure below).

MA 1: MA (closing, p1);

MA2: Ma (Guan,);

MID:？ MA(CLOSE，N)；

UPPER: MID + P/ 10*STD(CLOSE，N)；

Bottom: middle P/ 10*STD(CLOSE, n);

Bollinger Band, also known as BOLL, is one of the commonly used technical indicators in the stock market, reflecting the fluctuation of stock prices.