How to select or call a selection plugin from menu using automation plugin .

SPErr PlayGetting History Info(/*your parameters go here*/void)
{
     PIActionDescriptor result = NULL;
     DescriptorTypeID runtimeKeyID;
     DescriptorTypeID runtimeTypeID;
     DescriptorTypeID runtimeObjID;
     DescriptorTypeID runtimeEnumID;
     DescriptorTypeID runtimeClassID;
     DescriptorTypeID runtimePropID;
     DescriptorTypeID runtimeUnitID;
     SPErr error = kSPNoError;
     // Move this to the top of the routine!
     PIActionDescriptor desc0000000000000e48 = NULL;

     error = sPSActionDescriptor->Make(&desc0000000000000e48);
     if (error) goto returnError;

     // Unicode String as UTF8: Open
     error = sPSActionDescriptor->PutString(desc0000000000000e48, keyName, "Open");
     if (error) goto returnError;

     error = sPSActionDescriptor->PutInteger(desc0000000000000e48, keyItemIndex, 2);
     if (error) goto returnError;

     error = sPSActionDescriptor->PutInteger(desc0000000000000e48, keyCount, 3);
     if (error) goto returnError;

     error = sPSActionDescriptor->PutBoolean(desc0000000000000e48, keyAuto, true);
     if (error) goto returnError;

     error = sPSActionDescriptor->PutBoolean(desc0000000000000e48, keyHistoryBrushSource, false);
     if (error) goto returnError;

     error = sPSActionDescriptor->PutBoolean(desc0000000000000e48, keyCurrentHistoryState, false);
     if (error) goto returnError;

     error = sPSActionDescriptor->PutInteger(desc0000000000000e48, keyID, 64);
     if (error) goto returnError;

     error = sPSActionControl->StringIDToTypeID("Getting History Info", &runtimeEventID);
     if (error) goto returnError;

     error = sPSActionControl->Play(&result, runtimeEventID, desc0xe48, plugInDialogSilent);
     if (error) goto returnError;

returnError:
     if (result != NULL) sPSActionDescriptor->Free(result);
     if (desc0000000000000e48 != NULL) sPSActionDescriptor->Free(desc0000000000000e48);
     return error;
}

SPErr PlayGetting History Info(/*your parameters go here*/void)
{
     PIActionDescriptor result = NULL;
     DescriptorTypeID runtimeKeyID;
     DescriptorTypeID runtimeTypeID;
     DescriptorTypeID runtimeObjID;
     DescriptorTypeID runtimeEnumID;
     DescriptorTypeID runtimeClassID;
     DescriptorTypeID runtimePropID;
     DescriptorTypeID runtimeUnitID;
     SPErr error = kSPNoError;
     // Move this to the top of the routine!
     PIActionDescriptor desc0000000000000e50 = NULL;

     error = sPSActionDescriptor->Make(&desc0000000000000e50);
     if (error) goto returnError;

     // Unicode String as UTF8: WorkOSE Studio
     error = sPSActionDescriptor->PutString(desc0000000000000e50, keyName, "Studio");
     if (error) goto returnError;

     error = sPSActionDescriptor->PutInteger(desc0000000000000e50, keyItemIndex, 3);
     if (error) goto returnError;

     error = sPSActionDescriptor->PutInteger(desc0000000000000e50, keyCount, 3);
     if (error) goto returnError;

     error = sPSActionDescriptor->PutBoolean(desc0000000000000e50, keyAuto, true);
     if (error) goto returnError;

     error = sPSActionDescriptor->PutBoolean(desc0000000000000e50, keyHistoryBrushSource, false);
     if (error) goto returnError;

     error = sPSActionDescriptor->PutBoolean(desc0000000000000e50, keyCurrentHistoryState, true);
     if (error) goto returnError;

     error = sPSActionDescriptor->PutInteger(desc0000000000000e50, keyID, 67);
     if (error) goto returnError;

     error = sPSActionControl->StringIDToTypeID("Getting History Info", &runtimeEventID);
     if (error) goto returnError;

     error = sPSActionControl->Play(&result, runtimeEventID, desc0xe50, plugInDialogSilent);
     if (error) goto returnError;

returnError:
     if (result != NULL) sPSActionDescriptor->Free(result);
     if (desc0000000000000e50 != NULL) sPSActionDescriptor->Free(desc0000000000000e50);
     return error;
}

i want to call studio which is a selection plugin from automation plugin 
the above code is the history when then menu is clicked .
how do i make use of it.

I would really appreciate any thoughts/suggestions on the matter.

Thanks all.