Select in Query Editor how to execute a query with the default value

Grafana Plugin Development
1

Hello,
This is my query editor :

<div className="gf-form">
                <Select
                    placeholder="Select a Channel"
                    options={ListChannel}
                    showAllSelectedWhenOpen={true}
                    defaultValue={ListChannel[0]}
                    onChange={function (value: SelectableValue<string>): void | {} {
                        valuechannel = value
                        onRunQuery()
                    }} />
            </div>

But on the first load of my page, there isn’t data i’m forced to select one in my list and then it’s works.
How to make my default value work in the first load ?

Nicolas