IFilter with Custom properties - com

Question

I'm developing a custom filter to my file format. Everything works fine when I use any of system keys from <propkey.h> like PKEY_Search_Contents.
But now I need to have my custom properties to register and use with Windows Search. Imagine:
"SELECT * FROM SystemIndex WHERE scope ='file:C:/' AND Publisher.Item.CustomProperty LIKE '%Test%'"
I saw about Property Handlers and already tested. I used the RecipePropertyHandler project from Windows 7 SDK Samples. And when I searched with this code:
// get a property store for the mp3 file
IPropertyStore* store = NULL;
HRESULT hr = SHGetPropertyStoreFromParsingName(L"SomePath",
NULL, GPS_DEFAULT, __uuidof(IPropertyStore), (void**)&store);
hr = HRESULT_FROM_WIN32(GetLastError());
PROPVARIANT variant;
store->GetValue(PKEY_Microsoft_SampleRecipe_Difficulty, &variant);
//// very important undocumented method
store->Release();
CoUninitialize();
I receive the correct answer.
But I don't understand how to union IFilter with IPropertyStore to create my custom properties. To start my IFilter, I used the example from Windows 7 SDK Samples. I'm doing something like:
chunkValue.SetTextValue(PKEY_SearchContents, filtered.c_str(),CHUNK_TEXT, 1046, 0, 0, CHUNK_EOS);
I didn't found the link anymore anymore but I read a quote of msdn about you can't implement IFilter AND IPropertyStore together. It's that true? Talking in other words, I can't create a custom property?
I saw all links from msdn, like link, link2 or any other.
I can do separate things but I don't know how to union both.
Any ideia how to implement?
EDIT
Im trying yet implement the PropertyHandler. My .propdesc file have this content:
-->
<schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://schemas.microsoft.com/windows/2006/propertydescription"
schemaVersion="1.0">
<propertyDescriptionList publisher="Microsoft" product="SampleRecipe">
<propertyDescription name="Microsoft.SampleRecipe.Difficulty" formatID="{1794C9FE-74A9-497f-9C69-B31F03CE7EF9}" propID="100">
<description>This property indicates the preparation difficulty of a recipe.</description>
<searchInfo inInvertedIndex="true" isColumn="true" />
<typeInfo type="String" multipleValues="false" isViewable="true" />
<labelInfo label="Recipe difficulty" invitationText="Specify recipe difficulty" />
<displayInfo displayType="Enumerated" >
<editControl control="DropList"/>
<enumeratedList>
<enum value="Easy" text="Easy" />
<enum value="Medium" text="Medium" />
<enum value="Hard" text="Hard" />
</enumeratedList>
</displayInfo>
</propertyDescription>
<propertyDescription name="Microsoft.SampleRecipe.Keywords" formatID="{16D19FCB-7654-48AB-8057-DF8E51CC0755}" propID="100">
<description>This property indicates the preparation difficulty of a recipe.</description>
<searchInfo inInvertedIndex="true" isColumn="True"/>
<typeInfo type="String" multipleValues="true" isViewable="true" />
<labelInfo label="Recipe Keywords" invitationText="Specify recipe keyword" />
</propertyDescription>
</propertyDescriptionList>
</schema>
On Windows Properties:
I receive all informations from file... but when I try to search with Windows Search like:
SELECT Microsoft.SampleRecipe.Keywords FROM SystemIndex
Where directory='somedirectory'
I receive all lines empty... Any ideias why?
EDIT
I can see my properties on PropSchema:
I can use my Microsoft.SampleRecipe.DifficultyV2 on my WSSQL Query like:
SELECT Microsoft.SampleRecipe.KeywordsV2 FROM SystemIndex WHERE directory='C:\users\step\documents\rvffilter\'
But all the contents are empty