OK is greyed out, when saving a script

[OptionsTrader]

Hey guys here is my code for some custom candlesticks I am using. I am trying to add the last condition would be ADX is rising not just above the trend level (I left a space where around line 18). I tried doing something similar to the LRV and put in: Def Trending= ADX (close, 50) - ADX (close, 9); after the DEF TRUP/TRDown. I don't get an error message but I can't press apply or ok and I'm really confused as to why. Any help would be very appreciated. Thanks

declare once_per_bar;

def NetChgAvg = MovingAverage(AverageType.WILDERS, close - close[1], 14);

def theta = GetYYYYMMDD();
def LRV = Inertia(close - ((Highest(high, 20) + Lowest(low, 20)) / 2 + ExpAverage(close, 20)) / 2, 20);

input ADXLength = 14;
input ADXTrend = 20;
input ADXaverageType = AverageType.WILDERS;
def ADX = DMI(ADXlength, ADXaverageType).ADX;
def DIPlus = reference DIPlus(length = ADXLength);
def DIMinus = reference DIMinus(length = ADXLength);
def Tr = if ADX > ADXTrend then 1 else 0;
Def TRUp = if DIPlus > DIMinus and TR then 1 else 0;
Def TRDown = If DIMinus > DIPlus and TR then 1 else 0;



def Value = MovingAverage(AverageType.EXPONENTIAL, close, 10) - MovingAverage(AverageType.EXPONENTIAL, close, 50);
def Avg = MovingAverage(AverageType.EXPONENTIAL, Value, 9);

def periodIndx = theta;
def isPeriodRolled = CompoundValue(1, periodIndx != periodIndx[1], yes);
def volumeSum;
def volumeVwapSum;
def volumeVwap2Sum;
if (isPeriodRolled) {
    volumeSum = volume;
    volumeVwapSum = volume * vwap;
    volumeVwap2Sum = volume * Sqr(vwap);
} else {
    volumeSum = CompoundValue(1, volumeSum[1] + volume, volume);
    volumeVwapSum = CompoundValue(1, volumeVwapSum[1] + volume * vwap, volume * vwap);
    volumeVwap2Sum = CompoundValue(1, volumeVwap2Sum[1] + volume * Sqr(vwap), volume * Sqr(vwap));
}
def VWAP = volumeVwapSum / volumeSum;

def bulltrend = if ((Value > 0 and Avg > 0)) and (LRV > 0 and NetChgAvg > 0) and close[1] > VWAP[1] and close > VWAP  and TRUp then 1 else 0;

def beartrend = if ((Value < 0 and Avg < 0)) and (LRV < 0 and NetChgAvg < 0) and close[1] < VWAP[1] and close < VWAP and TRDown then 1 else 0;

AssignPriceColor(if bulltrend then Color.GREEN else if beartrend then Color.RED else Color.BLUE);

#End

 

[cellsee6]

In a watchlist in papermoney I have selected the custom4 item and added it to the right side.
I inserted my code (see the code below) but the OK button is greyed out. Why? I can enter the code into the live watchlist.

input length = 200;
input smooth = 9;
declare lower;
declare hide_on_intraday;
input longLength = 252;
input shortLength = 20;

def impvol = reference impvolatility * 100;
plot IV = impvol;

def clLog = log(close / close[1]);
plot HV = 100 * stdev(clLog, shortLength) * Sqrt(shortLength * longLength / (shortLength - 1));
HV.SetDefaultColor(GetColor(0));

def LowIV = Lowest(imp_volatility, length);
def HiIV = Highest(imp_volatility, length);
def IVRange = HiIV - LowIV;
def ivnet = imp_volatility - LowIV;
def Rank = round((ivnet / IVrange) * 100);
# plot SMA = Average(Rank, smooth);
plot RankIV = Rank ;

 

[MerryDay]

@OptionsTrader @cellsee6

There are no errors in your codes.
Generally, when "ok" is greyed out it means that it doesn't like the name you are giving it.
Save it under another name, try TEST.
Make sure whatever you use has no dashes or spaces.

If it is still greyed out, even after modifying the name that you are giving it;
we will need to see a screenshot.