What's the expected way to create a new revision for an APIM API?

const api = new azure.apimanagement.Api(`${prefix}-fn`, {
    resourceGroupName: resourceGroup.name,
    apiManagementName: apimService.name,
    revision: "1",
    displayName: "API",
    path: `${prefix}-fn`,
    protocols: ["https"],
    "import": {
        contentFormat: "swagger-link-json",
        contentValue: "<https://url/api/swagger.json>",
    },
  });

This is the original API. We now updated the swagger with an additional endpoint and want to create a new revision. Or do we want a new version? Changing the

revision

value fails. Do we add a whole new API resource and increment the revision? So have the same as above again just with a new revision? I feel like that will fail as well.