Set Array Element Operator []

Set the value of an array element.

	It is not possible to use class operations as index function – only built-in action script language operations are allowed.
Syntax	`set anArray[anIndex] = <expression>`
Semantics	The operator `[i]` allows to set the i-th element of the array. The first element has the position 0. `anIndex` can be a static integer literal, an object type Integer or an action script language operation or expression returning an integer.
Substitutables	`anArray`	Can be any variable or object attribute having the type Array.
	`anIndex`	Can be any expression that evaluates to an integer.
Examples	Set a specific array element Input: an array of names JSON `{"names": ["Irene", "Eliza", "Raymond", "Jane", "David"]}` CODE `set names[1] = "Meredith";` Result: JSON `{"names": ["Irene","Meredith", "Raymond", "Jane", "David"]}`
	Set the last array element Input: an array of names JSON `{"names": ["Irene", "Eliza", "Raymond", "Jane", "David"]}` CODE `set names[names.count()-1] = "Meredith";` Result: JSON `{"names": ["Irene", "Eliza", "Raymond", "Jane", "Meredith"]}`
	Set a property from a complex array element Input: a list of articles JSON `{ "articles": [ {"name": "AF-1200", "price": 64.50}, {"name": "AF-1400", "price": 72.50}, {"name": "CD-2002", "price": 570.00} ]}` CODE `set articles[0].price = 150.00;` Result: JSON `{ "articles": [ {"name": "AF-1200", "price": 150.00}, {"name": "AF-1400", "price": 72.50}, {"name": "CD-2002", "price": 570.00} ]}`

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