trader_bbands Bollinger Bands &reftitle.description; arraytrader_bbands arrayreal inttimePeriod floatnbDevUp floatnbDevDn intmAType &reftitle.parameters; real &trader.arg.array.of.real; timePeriod &trader.arg.time.period; nbDevUp &trader.arg.nbdevup; nbDevDn &trader.arg.nbdevdn; mAType &trader.arg.ma.type; &reftitle.returnvalues; Returns an array with calculated data or false on failure.