Granfeldt PSMA Home Dir example

I'm attempting to use the example home dir PSMA script from the recent FIM user group video. I've modified the PS scripts to create an appropriate remote share and have created the MA referencing the files. I am unsure what attributes require values passed to them via a sync rule and how to get values such as the objectguid which is referenced in the example script.

	@{ Name="Anchor-id";   			Type="Binary"; Value=1 }
	@{ Name="objectClass"; 			Type="String"; Value="person" }
	@{ Name="objectguidstring";		Type="String"; Value="" }
	@{ Name="objectsidstring";		Type="String"; Value="" }
	@{ Name="samaccountname"; 		Type="String"; Value="" }
	@{ Name="distinguishedname";   	Type="String"; Value="" }
	@{ Name="homedrive";          	Type="String"; Value="" }
	@{ Name="homedirectory"; 		Type="String"; Value="" }
@{ Name="employeeType";         Type="String"; Value="" }
    	@{ Name="sn";                   Type="String"; Value="" }

Above is the schema script. Do I need to pass values from the SR to id, objectguidstring, objectsidstring, distinguishedname and if so how do I get calculate these values?

Any help or pointing to documentation would be much appreciated.