AJO Advance expression editor query

Question

I am trying leverage Advance experssion under AJO Condition to check if the product quantity is 0.
For this I am using filter function, the reference url is:

https://experienceleague.adobe.com/en/docs/journey-optimizer/using/orchestrate-journeys/building-advanced-conditions-journeys/main-functions-journey/list/functionfilter

Here, Everytime I am getting the casting error saying invalid expression

The expression is invalid : The type of the value returned by the expression is invalid. The type is a listObject. Expected type is a boolean.

screenshot for reference

Mohan_Dugganab · Accepted Answer

You can take a look at the examples mentioned in this link https://experienceleague.adobe.com/en/docs/journey-optimizer/using/orchestrate-journeys/building-advanced-conditions-journeys/syntax/collection-management-functions which has references on how to access attributes within a listObject.

Example
@event{demoEvent.productListItems.all(currentEventField.priceTotal >= 150).quantity}==0

gujamaga · Answer

Hello @mustufam5967803 ,

Expression Activity always look for Boolean output.(True/False)

The expression that you have written is returning the object which is not accepted by Condition activity.

You can try below expression if that helps,

#{PATH_TO_PRODUCT_Array.all(currentDataPackField.product.quantity == 0)}

PATH_TO_PRODUCT_Array -> this should be path of your productListItems as er your screenshot.

The above expression will return true if all products in the productArray have a quantity of 0, and false otherwise.

If you want to check if any product in the array has a quantity of 0, you should use a below approach.

#{PATH_TO_PRODUCT_Array.any(currentDataPackField.product.quantity == 0)}

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