You could make a variable like `rollout_percent` that is an number. It could be set to 1. Then in your app you could do something like:

const rollout_percent = await varse_client.getNumber('rollout_percent');

const random_number = Math.random() * 100;

if (random_number <= rollout_percent) {

// do gated action and will trigger for 1% of users when rollout_percent === 1

}