New Post: Coding Problem

Hello Friend I am making a GUI for my vpn in visual basic and I am getting a problem when I am using
("perl something.pl" + somehting + something1 + something2)
but when I am using
("perl something.pl something1value something2value")
everything is working fine any solution please

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim IP As String = "xxx.xxx.xxx.xxx"
Dim Username As String = "root"
Dim Password As String = "mypassword"
Dim cmd As Renci.SshNet.SshCommand
Dim connInfo As New Renci.SshNet.PasswordConnectionInfo(IP, Username, Password)
Dim sshClient As New Renci.SshNet.SshClient(connInfo)
Dim something As String = TextBox1.Text
Dim something1 As String = TextBox2.Text
Dim something2 As String = TextBox3.Text
sshClient.Connect()
cmd = sshClient.RunCommand("perl something.pl" +something + something1 + something2)
Label1.Text = cmd.Result
End Sub
End Class