xcopy with MsBuild - msbuild

Question

I have a really simple build script that looks like this:
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="4.0" DefaultTargets="Bundle">
<ItemGroup>
<BuildArtifacts Include="..\_buildartifacts" />
<Application Include="..\_application" />
</ItemGroup>
<Target Name="Clean">
<RemoveDir Directories="#(BuildArtifacts)" />
<RemoveDir Directories="#(Application)" />
</Target>
<Target Name="Init" DependsOnTargets="Clean">
<MakeDir Directories="#(BuildArtifacts)" />
<MakeDir Directories="#(Application)" />
</Target>
<Target Name="Bundle" DependsOnTargets="Compile">
<Exec Command="xcopy.exe %(BuildArtifacts.FullPath) %(Application.FullPath) /e /EXCLUDE:$(MSBuildProjectDirectory)\files_to_ignore_when_bundling.txt" WorkingDirectory="C:\Windows\" />
</Target>
The problem is the Bundle target, only the %(BuildArtifacts.FullPath) gets extracted, %(BuildArtifacts.FullPath) is ignored when the scripts executes.
The command looks like this when executing:
xcopy.exe C:\#Code\blaj_buildartifacts /e /EXCLUDE:C:\#Code\blaj\files_to_ignore_when_bundling.txt" exited with code 4
As you can see, the destination path is not there, if I hard code the paths or just the destination path it all works. Any suggestion on what I am doing wrong here?
Update
I managed to solve the problem, I removed the last part WorkingDirectory="C:\Windows\"
And changed the script into this:
<Exec Command="xcopy.exe #(BuildArtifacts) #(Application) /e /EXCLUDE:$(MSBuildProjectDirectory)\files_to_ignore_when_bundling.txt" />
and now it's working :)

Answer 1

I managed to solve this. I've updated the question with the solution.
I removed the last part WorkingDirectory="C:\Windows\" And changed the script into this:
<Exec Command="xcopy.exe #(BuildArtifacts) #(Application) /e /EXCLUDE:$(MSBuildProjectDirectory)\files_to_ignore_when_bundling.txt" />
and now it's working :)

Answer 2

You need to execute xcopy twice. You are trying to use task batching for two different item arrays in the same invocation, it doesn't work like that. Try this:
<Target Name="Bundle" DependsOnTargets="Compile">
<Exec Command="xcopy.exe %(BuildArtifacts.FullPath) /e /EXCLUDE:$(MSBuildProjectDirectory)\files_to_ignore_when_bundling.txt" WorkingDirectory="C:\Windows\" />
<Exec Command="xcopy.exe %(Application.FullPath) /e /EXCLUDE:$(MSBuildProjectDirectory)\files_to_ignore_when_bundling.txt" WorkingDirectory="C:\Windows\" />
</Target>