Code Help needed with iCustom

I have this piece of code that is supposed to get the value from the ALF indy.
It is not working. Does anyone see why this would not work?

alf = iCustom(Symbol(), 0,"AdaptiveLaguerreFilter",20,5,4,Blue,0,1);

I have never put the input values straight into the iCustom as you have done so am not sure if that is the problem however try these 2 options and see if it works.

This way using inputs
input int LookBack = 20;
input int Median = 5;
input int PriceType = PRICE_MEDIAN;
input color Color1 = Blue;

alf = iCustom(Symbol(), 0,"AdaptiveLaguerreFilter",LookBack,Median,PriceType,Color1,0,1);

or this way to access the indicator inputs by default.
alf = iCustom(Symbol(), 0,"AdaptiveLaguerreFilter",0,1);

Looks like all he would have to do is eliminate the space in the word blue

Robert
PS not a coder just an observation

ok, thank CJA, did not make a difference. I see the value for about 2 or 3 bars on the 1min then it changes to an empty value. I have to restart the ea for the value to show again. I have put the code into different ea just to see if it is something in the coding, but I get the same.

Perhaps this is your problem you could try NormalizeDouble(alf,5);

MQL4 Reference / Conversion Functions / NormalizeDouble
NormalizeDouble
Rounding floating point number to a specified accuracy.
double NormalizeDouble(
double value, // normalized number
int digits // number of digits after decimal point
);
Parameters
value
[in] Value with a floating point.
digits
[in] Accuracy format, number of digits after point (0-8).
Return Value
Value of double type with preset accuracy.
Note
Calculated values of StopLoss, TakeProfit, and values of open prices for pending orders must be normalized with the accuracy, the value of which can be obtained by Digits().
Please note that when output to Journal using the Print() function, a normalized number may contain a greater number of decimal places than you expect. For example, for:
double a=76.671; // A normalized number with three decimal places
Print("Print(76.671)=",a); // Output as is
Print("DoubleToString(a,8)=",DoubleToString(a,8)); // Output with a preset accuracy
you will have the following in the terminal:
DoubleToString(a,8)=76.67100000
Print(76.671)=76.67100000000001
Example:
double pi=M_PI;
Print("pi = ",DoubleToString(pi,16));

double pi_3=NormalizeDouble(M_PI,3);
Print("NormalizeDouble(pi,3) = ",DoubleToString(pi_3,16))
;
double pi_8=NormalizeDouble(M_PI,8);
Print("NormalizeDouble(pi,8) = ",DoubleToString(pi_8,16));

double pi_0=NormalizeDouble(M_PI,0);
Print("NormalizeDouble(pi,0) = ",DoubleToString(pi_0,16));
/*
Result:
pi= 3.1415926535897931
NormalizeDouble(pi,3)= 3.1419999999999999
NormalizeDouble(pi,8)= 3.1415926499999998
NormalizeDouble(pi,0)= 3.0000000000000000
*/

I have attached the ea i am working on. The issue remains, still not able to get the values from the indy all the time.