Create release passing package version

file.ps1

$apiKey = "" #Octopus API Key
$OctopusURL = "" #Octopus URL
$ProjectName = "" #project name

$Header =  @{ "X-Octopus-ApiKey" = $apiKey }
 
#Getting Project By Name
$Project = Invoke-WebRequest -Uri "$OctopusURL/api/projects/$ProjectName" -Headers $Header| ConvertFrom-Json

#Getting Deployment Template to get next release version 
$dt = Invoke-WebRequest -Uri "$OctopusURL/api/deploymentprocesses/deploymentprocess-$($Project.id)/template" -Headers $Header | ConvertFrom-Json 
 
#Creating Release
#add an extra node to SelectedPackages for each package you want to deploy, on this example i'm deploying 2
#To select the next release version, i'm using the [NextVersionIncrement] method of the deployment template. You could also put a literal version string here.
$Body = @"
{
    "ProjectId":"$($Project.Id)",
    "Version":"$($dt.nextversionincrement)",
    "SelectedPackages":[{"StepName":"Deploy1","Version":"1.0.3"},
                        {"StepName":"Deploy2","Version":"1.0.0.7"}]
}
"@
Invoke-WebRequest -Uri $OctopusURL/api/releases -Method Post -Headers $Header -Body $Body