msbuild pack specify version from command line?

This is what I do with nuget pack now:

`nuget.exe pack myapp.csproj -IncludeReferencedProjects -Properties Configuration=Release;prerelease=INeedToSetThisFromTheCommandNotStaticConfigFile-123`

msbuild pack says no:

`msbuild myapp.csproj /T:pack /p:Configuration=Release;prerelease="-INeedToSetThisFromTheCommandNotStaticConfigFile-123"`

> prerelease=-INeedToSetThisFromTheCommandNotStaticConfigFile-123 : The term 'prerelease=-INeedToSetThisFromTheCommandNotStaticConfigFile-123' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.