invoke-command with scriptblock is not working

Hi Gents,

I am trying to run a batch file exist on remote computer local drive (which  will install a .exe silently) with the below powershell command... its not giving any error but nothing happening on remote computer

Invoke-Command-ComputerName XXXXXX -ScriptBlock{Start-Process"c:\installagent.bat"}-Credential abc\XXX

Please help me, I am not much aware of powershell scripting.

Thanks

Raju