Custom roperties for builtin studies objects

[mbuta]

I am trying to define some new methods [not properties] to builtin studies [like cci, for example].
I tried same property, same syntax, as described in documentation.
I could do it for EFS1 studies [CCIStudy], but not for EFS2 studies [cci].

Can anyone explain why this can hapen?
The only thing I can think of is that [I assume] cci is already defined as a "prototype" of CCIStudy and cannot define "prototype-to-prototype".

Thank you.

Note: Sorry for the "typo" in title.

[mbuta]

To clarify here is the sample code:

//var rCCI = CCIStudy.prototype;
//rCCI.XX getter = function() { return this.getValue(CCIStudy.CCI)/2; }; //This works fine when later called for any declared CCIStudy
//var vCCI3 = new CCIStudy(3, "Close"); => vCCI3 .XX returns correct value.

Same thing for cci does not
//var rCCI1 = cci.prototype;
//rCCI1.XX1 getter = function() { return this.getValue(0)/2; };
//var vCCI3 = cci(3); => vCCI3 .XX1 returns null.

[ACM]

From what I am seeing the reason your second example is not working is because you are not using the object constructed by the cci() function.
If you run a simple debug check on vCCI3 you will see that while the CCIStudy() function constructs an object called CCIStudy the cci() function constructs an object called Series and not cci. BTW I believe this is explained [at least in my understanding of it] in this article in the EFS KnowledgeBase and is applicable also to any other efs2 function that creates a series.
Hence all you need to do is replace cci.prototype with Series.prototype and your code will work as expected
Alex



P.S. I also sent you a Private Message with a alternative/simplified version of the above

To clarify here is the sample code:

//var rCCI = CCIStudy.prototype;
//rCCI.XX getter = function() { return this.getValue(CCIStudy.CCI)/2; }; //This works fine when later called for any declared CCIStudy
//var vCCI3 = new CCIStudy(3, "Close"); => vCCI3 .XX returns correct value.

Same thing for cci does not
//var rCCI1 = cci.prototype;
//rCCI1.XX1 getter = function() { return this.getValue(0)/2; };
//var vCCI3 = cci(3); => vCCI3 .XX1 returns null.

I am trying to define some new methods [not properties] to builtin studies [like cci, for example].
I tried same property, same syntax, as described in documentation.
I could do it for EFS1 studies [CCIStudy], but not for EFS2 studies [cci].

Can anyone explain why this can hapen?
The only thing I can think of is that [I assume] cci is already defined as a "prototype" of CCIStudy and cannot define "prototype-to-prototype".

Thank you.

Note: Sorry for the "typo" in title.

[waynecd]

It seems that this example no longer works with ver 12.xx.
Does getter still work with the newer versions?

The following code returns error:
"line 2: SyntaxError: missing ; before statement rCCI1.XX1 getter = function() { return this.getValue(0/2; };"

var rCCI1 = Series.prototype;
rCCI1.XX1 getter = function() { return this.getValue(0/2; };
var vCCI3 = cci(3);
function main(){
   return vCCI3.XX1;
}