PMDG SDK simconnect problem - connect to 2 aircrafts

Hello,

I have a small home cockpit and I'm tryinng to write an app to connect my cockpit with Prepar3d (PMDG 737 and 777).

My code:

	enum CLIENT_DATA_777
        {
            PMDG_777X_DATA_ID = 0x4E477831,
            PMDG_777X_DATA_DEFINITION=0x4E477832,
            PMDG_777X_CONTROL_ID	=0x4E477833,
            PMDG_777X_CONTROL_DEFINITION = 0x4E477834,
        };

	enum CLIENT_DATA_737
        {
            PMDG_NGX_DATA_ID = 0x4E477831,
            PMDG_NGX_DATA_DEFINITION=0x4E477832,
            PMDG_NGX_CONTROL_ID	=0x4E477833,
            PMDG_NGX_CONTROL_DEFINITION = 0x4E477834,
        };


(...)

simconnect_MapClientToDataName("PMDG_NGX_Data", CLIENT_DATA_737.PMDG_NGX_DATA_ID);
simconnect_MapClientToDataName("PMDG_NGX_Control", CLIENT_DATA_737.PMDG_NGX_CONTROL_ID);

simconnect_MapClientToDataName("PMDG_777X_Data", CLIENT_DATA_777.PMDG_NGX_DATA_ID);
simconnect_MapClientToDataName("PMDG_777X_Control", CLIENT_DATA_777.PMDG_NGX_CONTROL_ID);

The problem is an exception: DUPLICATE_ID. How to solve this? Do I have to close simconnect and open it again with settings for 737 only when 737 is loaded and the same with settings for 777 only when 777 is loaded?