Cannot Set Maximum Database Size By DBPROP_SSCE_MAX_DATABASE_SIZE;

I try to limit the database size to 2MB by the following code, but it doesn't work, Could somebody help me on it?
Thanks a lot!

Part of my code is:

VariantInit(&dbprop[0].vValue);

VariantInit(&dbprop[1].vValue);

VariantInit(&dbprop[2].vValue);

VariantInit(&dbprop[3].vValue);

// Create an instance of the OLE DB Provider

//

hr = CoCreateInstance( CLSID_SQLSERVERCE_3_0,

0,

CLSCTX_INPROC_SERVER,

IID_IDBInitialize,

(void**)&pIDBInitialize);

if(FAILED(hr))

{

goto Exit;

}

// Initialize a property with name of database

//

dbprop[0].dwPropertyID = DBPROP_INIT_DATASOURCE;

dbprop[0].dwOptions = DBPROPOPTIONS_REQUIRED;

dbprop[0].vValue.vt = VT_BSTR;

dbprop[0].vValue.bstrVal = SysAllocString( DATABASE_LOG );

if(NULL == dbprop[0].vValue.bstrVal)

{

hr = E_OUTOFMEMORY;

goto Exit;

}

// Initialize property with open mode for database

dbprop[1].dwPropertyID = DBPROP_INIT_MODE;

dbprop[1].dwOptions = DBPROPOPTIONS_REQUIRED;

dbprop[1].vValue.vt = VT_I4;

dbprop[1].vValue.lVal = DB_MODE_READ | DB_MODE_WRITE;

// Set max database size

dbprop[2].dwPropertyID = DBPROP_SSCE_MAX_DATABASE_SIZE;

dbprop[2].dwOptions = DBPROPOPTIONS_REQUIRED;

dbprop[2].vValue.vt = VT_I4;

dbprop[2].vValue.lVal = 2; // 2MB

// set max size of temp. database file to 2MB

dbprop[3].dwPropertyID = DBPROP_SSCE_TEMPFILE_MAX_SIZE;

dbprop[3].dwOptions = DBPROPOPTIONS_REQUIRED;

dbprop[3].vValue.vt = VT_I4;

dbprop[3].vValue.lVal = 2; // 2MB

// Initialize the property set

//

dbpropset[0].guidPropertySet = DBPROPSET_DBINIT;

dbpropset[0].rgProperties = dbprop;

dbpropset[0].cProperties = sizeof(dbprop)/sizeof(dbprop[0]);

// Get IDBDataSourceAdmin interface

//

hr = pIDBInitialize->QueryInterface(IID_IDBDataSourceAdmin, (void **) &pIDBDataSourceAdmin);

if(FAILED(hr))

{

goto Exit;

}

// Create and initialize data store

//

hr = pIDBDataSourceAdmin->CreateDataSource( 1, dbpropset, NULL, IID_IUnknown, &pIUnknownSession);

if(FAILED(hr))

{

goto Exit;

}