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Example 1: compare value of an item with numeric type:
				
					{
        "blockType":"when",
        "blockOptions":{
            "method":{
                "name":"compareNumbers",
                "args":{
                    "item":"item",
                    "comparator":"comparator",
                    "value":"value"
                }
            }
        },
        "fields":[
            {
                "name":"item",
                "type":"item",
                "value":"5de64f6a70c7be0541cc0853"
            },
            {
                "name":"comparator",
                "type":"string",
                "value": ">"
            },
            {
                "name":"value",
                "type":"int",
                "value": 51
            }
        ]
    }
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Example 2: compare item with expression:

Use an expression value to compare with an item updated value. The event will raise in a situation when an item value meet the expression value: – the item value is changed; – the expression value is changed.

				
					{
        "blockType": "when",
        "blockOptions":{
            "method": {
                "name": "compareNumbers",
                "args": {
                    "item": "item",
                    "comparator": "comparator",
                    "value": "value"
                }
            }
        },
        "fields": [
            {
                "name": "item",
                "type": "item",
                "value": "5de64f6a70c7be0541cc0853"
            },
            {
                "name": "comparator",
                "type": "string",
                "value": ">"
            },
            {
                "name": "value",
                "type": "expression",
                "value": "expressionName"
            }
        ]
    }
See Scenes expression related commands for detail on creating expressions.
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Example 3: compare expression with expression

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” becoming 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"
            }
        ]
    }
]
Edit

Example 4: compare value of any item that matches the device/item group with numeric type:

Define a device group, define an item group, make a condition block to make a comparison of an hub.item.updated broadcast with the condition value. The comparison is stateless. It doesn’t have information about previous value of any item in the group.

Comparison type: stateless

				
					{
    "blockType":"when",
    "blockOptions":{
        "method":{
            "name":"compareNumbers",
            "args":{
                "deviceGroup":"deviceGroup",
                "itemGroup":"itemGroup",
                "comparator":"comparator",
                "value":"value"
            }
        }
    },
    "fields":[
        {
            "name":"deviceGroup",
            "type":"device_group",
            "value":"5de64f6a70c7be0541cc0853"
        },
        {
            "name":"itemGroup",
            "type":"item_group",
            "value":"5de64f6a70c7be0541cc0854"
        },
        {
            "name":"comparator",
            "type":"string",
            "value": ">"
        },
        {
            "name":"value",
            "type":"int",
            "value": 51
        }
    ]
}

Available since: Group operations filtering is available since