PowerShell Code if statement failure - powershell

Question

I have an interesting situation going on where an agent was installed and it communicates back to the server. This agent is now EOL and support with the vendor was not renewed. Many of our agents are no longer communicating back to the server because its on stuck calling back to our DMZ network where the server was decommissioned. The agent has a tamper protection with password and the old admin doesn't know the password.
What I found we can do is on these servers, install the agent again and then the appliance that is on our inside network change the password to whatever, for my case I did blank.
To make things worse the agent is installed in either Program Files, Program Files (x86) and in some cases it's installed twice on the same server.
That's the background of the script I'm trying to develop. My idea was to download the agent from the appliance, detect the architecture and run the install then run an uninstall and loop it for each Program Files and/or Program Files(x86). I have it working OK, but it's not removing the application from the x86 directory. Also, I was hoping to grab some formatting tips.
if ((Get-WmiObject Win32_OperatingSystem).OSArchitecture -eq "64-bit") {
# Download Application
$source = "http://heartrate0001/x64/HeartRate.exe"
$filename = [System.IO.Path]::GetFileName($source)
$destination = "$ENV:USERPROFILE\Desktop\$filename"
$webclient = New-Object System.Net.WebClient
$webclient.DownloadFile($source,$destination)
$patha = "C:\Program Files\ICU\HeartRate.exe"
$pathb ="C:\Program Files (x86)\ICU\HeartRate.exe"
$Folder1Path = 'C:\Program Files\ICU\HeartRate.exe'
$Folder2Path = 'C:\Program Files (x86)\ICU\HeartRate.exe'
}
# Install Application
$process = Start-Process $destination -PassThru -Wait
$process.ExitCode
Write-Host $process.Exitcode
# Uninstall
if ((Test-Path -Path $Folder1Path) -eq "true") {
{
$Folder1Path = "C:\Program Files\ICU\HeartRate.exe"
$arg1 = "-uninstall"
& $Folder1Path $Arg1
}
}
if ((Test-Path -Path $Folder2Path) -eq "true") {
{
$Folder2Path = "C:\Program Files\ICU\HeartRate.exe"
$arg1 = "-uninstall"
& $Folder2Path $Arg1
}
} elseif ((Get-WmiObject Win32_OperatingSystem).OSArchitecture -eq "32-bit") {
# Download Application
$source = "http://heartrate0001/HeartRate.exe"
$destination = "$ENV:USERPROFILE\Desktop\$filename"
$webclient = New-Object System.Net.WebClient
$webclient.DownloadFile($source,$destination)
# Install Application
$process = Start-Process $destination -PassThru -Wait
$process.ExitCode
Write-Host $process.Exitcode
# Uninstall
$app = "C:\Program Files\ICU\HeartRate.exe"
$arg1 = "-uninstall"
& $app $Arg1
}

Answer 1

You have a script block inside your if statement. However, you never invoke that script block.
Change:
if ((Test-Path -Path $Folder2Path) -eq "true") {
{
$Folder2Path = "C:\Program Files\ICU\HeartRate.exe"
$arg1 = "-uninstall"
& $Folder2Path $Arg1
}
}
to:
if ((Test-Path -Path $Folder2Path) -eq "true") {
$Folder2Path = "C:\Program Files\ICU\HeartRate.exe"
$arg1 = "-uninstall"
& $Folder2Path $Arg1
}

Answer 2

This answer is purely for a formatting example as requested by OP. Most of your work was redundant:
If ((Get-WmiObject Win32_OperatingSystem).OSArchitecture -eq '64-bit')
{
$Source = 'http://heartrate0001/x64/HeartRate.exe'
$Destination = "$env:UserProfile\Desktop\$([IO.Path]::GetFileName($Source))"
# PSv3+
Invoke-WebRequest -Uri $Source -OutFile $Destination
$x64 = "$env:ProgramFiles\ICU\HeartRate.exe"
$x86 = "${env:ProgramFiles(x86)}\ICU\HeartRate.exe"
(Start-Process $Destination -PassThru -Wait).ExitCode
If (Test-Path $x64) { & $x64 -uninstall }
If (Test-Path $x86) { & $x86 -uninstall }
}
Else
{
$Source = 'http://heartrate0001/HeartRate.exe'
$Destination = "$env:UserProfile\Desktop\$([IO.Path]::GetFileName($Source))"
Invoke-WebRequest -Uri $Source -OutFile $Destination
$x86 = "$env:ProgramFiles\ICU\HeartRate.exe"
(Start-Process $Destination -PassThru -Wait).ExitCode
If (Test-Path $x86) { & $x86 -uninstall }
}