Automating GPS Connection

We have Garmin GLO USB GPS. We're using Bentley Map 08.11.09.107 on Win8 tablet to get GPS position. GPS is connected via Bluetooth as NMEA-Compatible device. Problem is that for some reason GPS often looses connection (GPS connection status becomes red). Then we have to pick different Comm Port Numbers from Comm Port Number dropdown list until GPS connects again. Is there a way to automate reconnection process (maybe by VBA or VB.NET)?

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