Sharepoint online list button "actionParams" : syntax for multiple flow id

Leclercq_Loic You can create two flow buttons & show/hide them based on column values.

For Example: 

{
    "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
    "elmType": "div",
    "children": [
        {
            "elmType": "button",
            "txtContent": "Flow 1",
            "style": {
                "display": "=if([$Validation] == 'Refused', 'block', 'none')"
            },
            "customRowAction": {
                "action": "executeFlow",
                "actionParams": "{\"id\":\"9b82dc01-891a-489c-b7bc-768cac9c2209\", \"headerText\":\"Flow A\",\"runFlowButtonText\":\"Run Flow A\"}"
            }
        },
        {
            "elmType": "button",
            "txtContent": "Flow 2",
            "style": {
                "display": "=if([$Validation] == 'Refused', 'none', 'block')"
            },
            "customRowAction": {
                "action": "executeFlow",
                "actionParams": "{\"id\":\"ca3ce1e0-8145-40ca-8074-5d76b9f9e8d9\", \"headerText\":\"It's Flow Time!\",\"runFlowButtonText\":\"Do it\"}"
            }
        }
    ]
}

Output: 

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