Compare value of an expression with name “expressionLeft” with a value of an expression with name “expressionRight”. The event will raise when value of “expressionLeft” becomming greater than value of “expressionRight”. Event checked whenever values of “expressionLeft” or “expressionRight” are changed.
				
					"when" : [
    {
        "blockType": "when",
        "blockOptions":{
            "method": {
                "name": "compareNumbers",
                "args": {
                    "expression": "expression",
                    "comparator": "comparator",
                    "value": "value"
                }
            }
        },
        "fields": [
            {
                "name": "expression",
                "type": "expression",
                "value": "expressionLeft"
            },
            {
                "name": "comparator",
                "type": "string",
                "value": ">"
            },
            {
                "name": "value",
                "type": "expression",
                "value": "expressionRight"
            }
        ]
    }
]