trader_willr Williams' %R &reftitle.description; arraytrader_willr arrayhigh arraylow arrayclose integertimePeriod &reftitle.parameters; high &trader.arg.array.of.real.high; low &trader.arg.array.of.real.low; close &trader.arg.array.of.real.close; timePeriod &trader.arg.time.period; &reftitle.returnvalues; Returns an array with calculated data or false on failure.