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getKey

The getKey function returns the key of a specified value, or the index of a specified element, in a collection.

Data type of the return value will depend on the data type of the key.
Returns null if the specified value is not found.
Data type is NUMBER if the index of an element is returned. Returns -1 if the specified element is not found.

To get the key of a specified value:

<variable> = <collectionVariable>.getKey(<value>);

(OR)

To get the index value of an element:

<variable> = <collectionVariable>.getKey(<element>);

where,

Parameter	Data type	Description
<variable>	AS APPLICABLE	Variable which will hold the returned value.
<collectionVariable>	COLLECTION	The variable from which the key or the index will be returned.
<value>	AS APPLICABLE	The value whose key will be returned. This function returns null if the specified value is not found.
<element>	AS APPLICABLE	The element whose index value will be returned. This function returns -1 if the specified element is not found.

 productVersion = collection("Creator" : 5, "CRM" : 2, "Mail" : 8);
 product =  productVersion.getKey( 5 );
 info product; // Returns "Creator"

 products = Collection("Creator", "CRM", "Mail");
 indexNum = products.getKey( "CRM" );
 info indexNum; // Returns 1