Element - workaround if it doesn't find the element ?

[wattzor]

I've been working with this JSON parser and have found it to be impressively fast. However, I have encountered a challenge for which I am seeking a solution.

Consider the following example:
json.Decode('{ "integer1": 5, "string1": "la", "null1": null, "mixedNestedArray": [{"name": "Nested object"}, 4, true, [null, null, 5] ], "object1" : { "subint1":5, "substring1":"lala", "subfloat1":5.44 }, "string2": "asdf", "array2" : [5,4] }');

When I retrieve an existing element, such as:
testSTR := json.Element('integer1').AsString();
this works perfectly. However, if I attempt to retrieve an element that does not exist:
testSTR := json.Element('integer123').AsString();

the PLC locks down and throws an exception.

Is there a method to check for the presence of an element before attempting to retrieve it, or alternatively, return an empty string if the element is not found? This functionality is crucial as the data from HTTP requests may vary in structure.

[vChavezB]

I did something similar as this in Codesys

METHOD Parse : ReplyITF
VAR_INPUT
	pMsg:POINTER TO STRING;
END_VAR
VAR
	decoder:JsonDecoder;
	element: IJSONElement;
	val:STRING;
	encoder:JsonDecoder;
END_VAR

decoder.Decode(pMsg^);
element:=decoder.Element('cid');
IF element = 0 THEN
	// ELEMENT NOT FOUND!!!!!!!
END_IF