请用通达信系统中的标准指标编写一个公式判断当股价从120分布林下轨向上突破时是否会回踩120分中轨。

REF(CLOSE,1)>LOWER(BOLL(20,2)) AND CLOSE>REF(CLOSE,1) AND REF(CLOSE,1)<=MA(CLOSE,120) AND CLOSE>MA(CLOSE,120) AND REF(CLOSE,1)<=BOLL(20,2) AND CLOSE>BOLL(20,2) AND REF(CLOSE,1)<=REF(MA(CLOSE,120),1) AND CLOSE<=MA(CLOSE,120)