Pass an argument from a .bat file to PowerShell script

I have subscribed to a push notification service in order to be able to send push notifications to my phone.
Here is the PowerShell script:

Code:

$uri = "https://api.pushover.net/1/messages.json"
$parameters = @{
  token = "token"
  user = "user"
  message = "Push Message"
}
$parameters | Invoke-RestMethod -Uri $uri -Method Post

I have not included the actual token or user values, but when I do, and I call this from a .bat file, it works.
Here is the .bat file:

Code:

Powershell.exe -executionpolicy remotesigned -File  C:\Users\Stan\Desktop\PushOverPS.ps1

What I want to be able to do is insert a text message into the .bat file and pass it to the powershell script. The text could be a literal string or a file reference.
How would I do either?
Thanks.
Windows 10 Pro 18363.1139

Arguments can be passed to scripts when they are started. Each value passed along to a script can be examined using formal parameters. The script name itself is represented by the parameter %0. The parameter %1 represents the first argument passed in to the script, %2 the second, and so on until %9 for the ninth argument. For example, if you create a script called Check-sys and then use the following command to call the script:

Code:

check-sys mailer1 full actual

You would find that the related parameter values are:

%0 — check-sys

%1 — mailer1

%2 — full

%3 — actual

Thank you for the suggestion, but it did not quite get me there. What I did was change the .bat file to-
Powershell.exe -executionpolicy remotesigned -File C:\Users\Stan\Desktop\PushOverPS.ps1 "Hello There"

I changed the PS script to-

Code:

$uri = "https://api.pushover.net/1/messages.json"
$parameters = @{
  token = ""
  user = ""
  message = $args[0]
}
$parameters | Invoke-RestMethod -Uri $uri -Method Post

Which works. I will actually be constructing the .bat file from another application, so I will just insert the text message at that time.