Sapi Dynamic Grammar loading

Question

I have a sapi grammar as

<rule id="root">
    <item repeat="0-">
       <ruleref uri="#digit"></ruleref>
     </item>
 </rule>

<rule id="digit">
<one-of>
      <item>1</item>
      <item>2</item>
      <item>3</item>
      <item>4</item>
      <item>5</item>
      <item>6</item>
      <item>7</item>
      <item>8</item>
      <item>9</item>
      <item>0</item>
  </one-of>
 </rule>

I want equivalent of dynamic loading of grammar can anyone helpme on this?

I have tried

SPSTATEHANDLE hRule;
hr = cpGrammar->GetRule(L"digit", NULL, SPRAF_TopLevel | SPRAF_Active, TRUE,&hRule);
hr = cpGrammar->AddWordTransition(hRule, NULL, L"1", NULL, SPWT_LEXICAL, 1, NULL);
hr = cpGrammar->AddWordTransition(hRule, NULL, L"2", NULL, SPWT_LEXICAL, 1, NULL);
hr = cpGrammar->AddWordTransition(hRule, NULL, L"3", NULL, SPWT_LEXICAL, 1, NULL);
hr = cpGrammar->AddWordTransition(hRule, NULL, L"4", NULL, SPWT_LEXICAL, 1, NULL);
hr = cpGrammar->AddWordTransition(hRule, NULL, L"5", NULL, SPWT_LEXICAL, 1, NULL);
hr = cpGrammar->AddWordTransition(hRule, NULL, L"6", NULL, SPWT_LEXICAL, 1, NULL);
hr = cpGrammar->AddWordTransition(hRule, NULL, L"7", NULL, SPWT_LEXICAL, 1, NULL);
hr = cpGrammar->AddWordTransition(hRule, NULL, L"8", NULL, SPWT_LEXICAL, 1, NULL);
hr = cpGrammar->AddWordTransition(hRule, NULL, L"9", NULL, SPWT_LEXICAL, 1, NULL);
hr = cpGrammar->AddWordTransition(hRule, NULL, L"0", NULL, SPWT_LEXICAL, 1, NULL);
hr = cpGrammar->Commit(NULL);
hr = cpGrammar->SetGrammarState(SPGS_ENABLED);

It doesnt work for me , am I doing the right thing?

Answer 1

Reviewed some code that built dynamic grammars, and I'm pretty sure you need SPRAF_Dynamic along with SPRAF_TopLevel | SPRAF_Active. (At least, the code I wrote used that.)