retrieve variable value from nsh file

[shekara]

i have created .nsh file using SIMPLE SC to start, stop and remove services. i have used macros for this.

#SimpleSC::StartService [name_of_service] [arguments] [timeout]
!define Service::Start `!insertmacro Service::Start`
!macro Service::Start SVC Args Timeout
Push $0
Push $1

SimpleSC::ExistsService "${SVC}"
Pop $0
${If} $0 == 0
SimpleSC::GetServiceStatus "${SVC}"
Pop $0 ;error code
Pop $1 ;service status
${If} $0 == 0
${AndIf} $1 != 4
SimpleSC::StartService "${SVC}" "${Args}" "${Timeout}"

Pop $0

${Endif}
${Endif}

Pop $1
Pop $0
!macroend

When i call this in msu nsi file it works. But i would like to know the return value for start service (SimpleSC::StartService "${SVC}" "${Args}" "${Timeout}", Pop $0). howdo i retrive the $0 value of nsh file in my nsi file

[JasonFriday13]

The return code from SimpleSC::StartService is in $0, so at the end of the macro change 'Pop $0' to "Exch $0". Then after you have called ${Service::Start}, use 'Pop' to get the return code. The documentation says that 0 is success, any other number is an error.