SSIS Package execution error from powershell

Question

Hi I have written a powershell script to exec SSIS packages. I am passing variable values at runtime by reading it from a text file.
But it throws an error.
Here is my script.
#Read Data from Parameter File
$variable=Get-Content D:\Batch\Bin\ETLParameters.txt
$variable.GetType()
 $dest_conn_str=$variable[1]
 $mail_cc=$variable[2]
 $mail_from=$variable[3]
 $mail_str=$variable[4]
 $mail_to=$variable[5]
 $pkg_path=$variable[6]
 $ps_exe_path=$variable[7]
 $ps_script_cmd=$variable[8]
 $ps_script_path=$variable[9]
 $src_conn_str=$variable[10]
 $src_sys_id=$variable[11]
#Executing SSIS packages from command prompt
$cmd = 'dtexec /f "' + $pkg_path + 'pkg_ntas_all.dtsx' + '"' + ' /SET \Package.Variables[User::src_conn_str].Properties[Value];"' + $src_conn_str + '"' + ' /SET \Package.Variables[User::dest_conn_str].Properties[Value];"'
+ $dest_conn_str + '"' + ' /SET \Package.Variables[User::src_sys_id].Properties[Value];"' + $src_sys_id + '"' + ' /SET \Package.Variables[User::pkg_file_path].Properties[Value];"' + $pkg_path + '"' +
' /SET \Package.Variables[User::mail_str].Properties[Value];"' + $mail_str + '"' + ' /SET \Package.Variables[User::mail_from].Properties[Value];"' + $mail_from + '"' + ' /SET \Package.Variables[User::mail_to].Properties[Value];"'
+ $mail_to + '"'+ ' /SET \Package.Variables[User::mail_cc].Properties[Value];"' + $mail_cc + '"' + ' /SET \Package.Variables[User::ps_exe_path].Properties[Value];"' + $ps_exe_path + '"' + ' /SET
\Package.Variables[User::ps_script_path].Properties[Value];"' + $ps_script_path + '"' + ' /SET \Package.Variables[User::ps_script_cmd].Properties[Value];"' + $ps_script_cmd + '"'  
$cmd
DECLARE @returncode int
EXEC @returncode = xp_cmdshell @cmd
Types of error that I get -
If I run the $cmd directly. Which is the concatenated string of dtexec command with parameters. It doesn't do anything, not even an error and the pwoershell execution just completes.
If I use exec EXEC @returncode = xp_cmdshell @cmd    ----- Then it throws me the error that the exec is not recognized name of cmdlet.
Please help as I a noob in any kind of scripting.

Answer 1

I did but it just printed the entire string on the command line and assigned all the values.
PS C:\Users\dev_setup> . D:\Batch\Bin\runETL.ps1
IsPublic IsSerial Name                                     BaseType
True     True     Object[]                                
System.Array
dtexec /f "D:\ETL\test\test\test_ETL\pkg_all.dtsx" /SET "\Package.
Variables[User::src_conn_str].Properties[Value]";"Data Source=SOURCE1;Initial Catalog=tagtest;Provider=SAOLEDB.11;Integrated Security=SSPI;
" /SET "\Package.Variables[User::dest_conn_str].Properties[Value]";"destinationDb;User ID=FP_DEV;Password=**********;Initial Catalog=xyz;Provider=SQLOLEDB.1;Persist Security Info=True;Auto Translate=False;Packet Size=10240;" /SET " \Package.Variables[User::src_sys_id].Properties[Value]
";"100200" /SET "\Package.Variables[User::pkg_file_path].Properties[Value]";"D:\ETL\test\test\test_ETL\" /SET "\Package.Variables[User::mail_str].Properties[Value]";"SmtpServer=mailhost.test.com;UseWindowsAuthentication=False;EnableSsl=False;" /SET "\Package.Variables[User::mail_from].Properties[Value]
";"[email protected]" /SET "\Package.Variables[User::mail_to].Properties[Value]";"[email protected]" /SET "\Package.Variables[User::mail_cc].Properties[Value]";"[email protected]" /SET "\Package.Variables[User::ps_exe_path].Properties[Value]";"C:\Windows\System32\WindowsPower
Shell\v1.0\PowerShell.exe" /SET "\Package.Variables[User::ps_script_path].Properties[Value]";"D:\ETL\Powershell_Script\" /SET "\Package.Variables[User::ps_script_cmd].Properties[Value]";"create_historical_reject_file.ps1 -input_variable"
PS C:\Users\svc_sp_fp_dev_setup>
But when I just run it without passing the parameters it runs. What might be the issue.