Is it possible to get parameters from the pull request for Control Options on Azure Devops Pipelines

Azure Devops pipeline does not pass the title of prs. You can find here the predefined variables: Use predefined variables. To get detailed information of active Pull Request you may use Rest Api Pull Requests - Get Pull Request By Id with System.PullRequest.PullRequestId. As example to get the title:

1. Add a custom variable Define variables like Custom.PRTitle.
2. Set the access to the PAT in your job. System.AccessToken
3. Add first step as script to read and save the title of your pull requests, like with PowerShell:

$user = ""
$token = "$(System.AccessToken)"
$teamProject = "$(System.TeamProject)"
$PRId = "$(System.PullRequest.PullRequestId)"
$orgUrl = "$(System.CollectionUri)"

$base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f $user,$token)))

$uriGetActivePr = "$orgUrl/$teamProject/_apis/git/pullrequests/$PRId"

$resultPR = Invoke-RestMethod -Uri $uriGetActivePr -Method Get -ContentType "application/json" -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)}

Write-Host "##vso[task.setvariable variable=Custom.PRTitle]"$resultPR.title

Then you can use your new variable in your conditions, like:

and(contains(variables['Build.SourceBranch'], 'refs/heads/master'), contains(variables['Custom.PRTitle'], 'patch'))