Current high of day on mobile

Hi Pete, can you please take a look at the code below that is made to track the current days high. It works fine on a computer but when I transfer it to mobile instead of tracking the current high of day, it moves to the bars high of day. Thanks.

def MktPlot = GetLastDay() – 8 <= GetDay() and GetLastYear() – 0 <= GetYear();

def RMplots = RegularTradingStart (GetYYYYMMDD()) > GetTime() – 28880000;

def day = GetDay();

def Open = day != day[1];

def CDHigh = if !day then Double.NaN else high (period = “day”);

plot CDH = if MktPlot and RMplots then CDHigh else Double.NaN;

CDH.SetDefaultColor (Color.GREEN);

CDH.SetStyle (Curve.SHORT_DASH);