Debug Prompt not coming when Powershel breakpoint hit

Set-PSBreakpoint -Command get-process -Script C:\Temp\SP\AutoSPInstaller\AutoSPInstallerFunctions.ps1

or

Set-PSBreakpoint -Script C:\Temp\SP\AutoSPInstaller\AutoSPInstallerFunctions.ps1 -line 2132

Then I launch a batch file which internally calls PowerShell script  AutoSPInstallerFunctions.ps1

C:\Temp\SP\AutoSPInstaller\AutoSPInstallerLaunch.bat

When the breakpoint hits DBG prompt does not show up it only shows me breakpoint hit it never provides me an option of step into, list ,step-over etc...

Any clue!!