Using value of selected item list

I'm working on existing code. I want to use the value of a selected item in a list to use it in a query. So, the corresponding records should be displayed in a subform when an item of the list is selected. This is the code i'm using:
This is the code i use to populate the list
DECLARE
locatienaam varchar(100);
locid number;
recordcount number;
i number;
correct NUMBER;
hList ITEM := Find_Item('LIST_LOCATIE');
iRC PLS_INTEGER := 0;
currValue VARCHAR2(60); /* increase if required*/
BEGIN
--vraag het bijhorende ID op van de geselecteerde locatie.
currValue := Name_In('LIST_LOCATIE');
FOR i IN 1..Get_List_Element_Count(hList) LOOP
IF currValue = Get_List_Element_Value(hList,i) THEN
iRC := i;
break;
END IF;
END LOOP;
locid := GET_LIST_ELEMENT_VALUE('LIST_LOCATIE', iRC);
locatienaam := GET_LIST_ELEMENT_LABEL('LIST_LOCATIE', iRC);
Below the code i use to make the query
SET_BLOCK_PROPERTY('V_KALENDER',DEFAULT_WHERE,'(BEGINDATUM BETWEEN '||''''||:V_KALENDER.TIJDSTIP1 ||'''AND '||''''||:V_KALENDER.TIJDSTIP2||''') AND (NAAM=:locatienaam)');
GO_BLOCK('V_KALENDER');
Execute_Query;
I get the message: "unable to resolve reference to locatienaam"
The subform is populated with all the records between the two dates of all the locations, not only by the selected location.

Hi,
Welcome to the forum!
If locatienaam is a local variable, don't use a colon (:) to reference it.
You didn't say
IF :currValue = Get_List_Element_Value(:hList,:i) THEN so why should you say
:locatienaam?

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