`param (
[string]$CaseIdentifier
)

Write-Host "CaseIdentifier value: $CaseIdentifier"
Write-Host "Script Start"
try {
    Add-Type -Path "C:Program Files (x86)WinSCPWinSCPnet.dll"  # Update with your actual path
    Write-Host "WinSCP .NET Assembly loaded successfully."
} catch {
    Write-Host "Error loading WinSCP .NET Assembly: $_"
    exit 1
}
Import-Module -Name ImportExcel
try {
    $modulePath = (Get-Module -Name ImportExcel).Path
    Write-Host "Module path: $modulePath"

    if (-not ($modulePath)) {
        Write-Host "ImportExcel module not loaded."
        exit 1
    } else {
        Import-Module $modulePath
        Write-Host "ImportExcel module imported successfully."
    }
} catch {
    Write-Host "Error importing ImportExcel module: $_"
    exit 1
}

$excelFilePath = "srctestresourcesDatatablesWITSOnline_NNAmultivinInquiry.xlsx"
Write-Host "Excel file path: $excelFilePath"
$sheetName = "General_Data"
Write-Host "Sheet name: $sheetName"
try {
    # Read data from the Excel sheet
    $exceldata = Import-Excel -Path $excelFilePath -WorksheetName $sheetName
    Write-Host "Excel data imported successfully."
} catch {
    Write-Host "Error importing Excel data: $_"
    exit 1
}
foreach ($row in $exceldata) {
    try {
        $hostName = $row.HostName
        Write-Host "Hostname: $hostName"

        $userName = $row.UserName
        Write-Host "Username: $userName"

        $passWord = $row.Password
        Write-Host "Password: $passWord"
        $timeStamp = Get-Date -Format "yyyyMMddHHmmss"
        # Debug: Print the value of CaseIdentifier
        Write-Host "CaseIdentifier before switch: $CaseIdentifier"
        # Debug: Print the switch statement is about to execute
        Write-Host "Executing switch statement with CaseIdentifier: $CaseIdentifier"
        switch ($CaseIdentifier.Trim().ToLower()) {
            "case1" {
                Write-Host "Inside case1 block"
              #  $bodFilePath = $row.smyRNABodfilepath
               # Write-Host "smyRNABodfilepath value: $($row.smyRNABodfilepath)"
               # $remotePath = $row.ftplocationPath1
               # Write-Host "Selected case1"
            }
            "case2" {
                Write-Host "Inside case2 block"
               # $bodFilePath = $row.losAngelesBodfilepath
               # Write-Host "losAngelesBodfilepath value: $($row.losAngelesBodfilepath)"
               # $remotePath = $row.ftplocationPath2
               # Write-Host "Selected case2"
            }
            "case3" {
                Write-Host "Inside case3 block"
                $bodFilePath = $row.AguasBodfilepath
                Write-Host "AguasBodfilepath value: $($row.AguasBodfilepath)"
                $remotePath = $row.ftplocationPath3
                Write-Host "Selected case3 "
            }
            "case4" {
                Write-Host "Inside case4 block"
                $bodFilePath = $row.Aguas2Bodfilepath
                Write-Host "Aguas2Bodfilepath value: $($row.Aguas2Bodfilepath)"
                $remotePath = $row.ftplocationPath4
                Write-Host "Selected case4"
            }
            default {
                Write-Host "Invalid case identifier: $CaseIdentifier"
                exit 1
            }
        }

        # Debug: Ensure $bodFilePath and $remotePath are set
        Write-Host "BOD file path: $bodFilePath"
        Write-Host "Remote path: $remotePath"

        # Remote path where you want to upload the file
        $ftpFileLocation = $remotePath -replace '${timeStamp}', $timeStamp
        Write-Host "FTP file location: $ftpFileLocation"
    } catch {
        Write-Host "Error reading properties: $_"
        exit 1
    }
    }

    try {
        # Set up session options for FTP
        Write-Host "Setting up session options"
        $sessionOptions = New-Object WinSCP.SessionOptions -Property @{
            Protocol = [WinSCP.Protocol]::Ftp
            HostName = $hostName
            UserName = $userName
            Password = $passWord
        }

        # Create Session
        $session = New-Object WinSCP.Session

        # Connect
        Write-Host "Opening session"
        $session.Open($sessionOptions)

        # Upload file
        Write-Host "Uploading file"
        $transferOptions = New-Object WinSCP.TransferOptions
        $transferResult = $session.PutFiles($bodFilePath, $ftpFileLocation, $False, $transferOptions)

        # Check for errors
        $transferResult.Check()

        # Output a success message
        Write-Host "File uploaded successfully."
        Write-Host "Remote path: $remotePath"
        
    } catch {
        Write-Host "Error during FTP operation: $_"
    } finally {
        # Disconnect, clean up
        Write-Host "Disposing session"
        $session.Dispose()
        Write-Host "Script End"
    }

I am trying to running my powershell script to open FileZila through Java.But in powershell code i have different case statments and control is not entering into switch after read the excel sheet. not able to find out the issue. We are calling this scripts using Java.