Azure APIM: How to update apiRevision of an Api and set it to Current while deploying it through Bicep?

Question

I need to deploy an API to APIM, update its revision and make it current. I am looking for best practices to do this (i.e., updating an api), and to achieve it using Azure DevOps. Also, I have below questions,

1. My backing API service (Azure function) is a .Net application that has OpenAPI Specification defined using Microsoft.Azure.WebJobs.Extensions.OpenApi. The versioning of the API is defined using OpenApiInfo.Version attribute. For updating the specification i am using Bicep shown below,

resource api 'Microsoft.ApiManagement/service/apis@2022-09-01-preview' = {
  parent: apimInstance
  name: '${apiName};rev=${apiRevision}'
  properties: {
    displayName: apiDisplayName
    apiType: 'http'
    format: 'openapi+json-link'
    value: 'https://$(FunctionAppName).azurewebsites.net/api/swagger.json'
    path: apiUrlSuffix
    protocols: [
      'https'
    ]
    subscriptionRequired: true
    // isCurrent: makeCurrent
    apiVersionSetId: apiVersionSet.id
    apiVersion: apiVersionValue
    apiRevision: apiRevisionValue
  }
}

Question: Can't the bicep (ARM) use the version information defined in the swagger.json file? Currently, I am explicitly passing apiVersionValue.

2. In the above bicep, uncommenting the isCurrent results in failure of pipeline with "Cannot update revision ..." error. How to update the apiRevision and set it to current?