Serial Monitor and Bluetooth outgoing Com Port

Here what I am trying to do:

Why: I want to access my bluetooth at coomand level by typing $$$

The problem:

The Uno got Com3 and is communication with IDE and I can access the serial Monitor
The Bluetooth connected to the Uno got Com6, com7.
When I access tools to change the port from com3 to com7 (BT outgoing) I get error communicating
The BT is hand shacked with windows 8.1
I tried terminal program I got error saying I cannot open port 7

According to the link above I should be able to connect serial monitor with the outgoing port of the BT.

Can anyone familiar with serial communication Why I cannot access Bluetooth outgoing port.

I believe it has nothing to do with a specific BT hardware that is why I did not provide hardware details. I know the BT is working.

To summarize: Can I access BT outgoing port USING IDE as stated in the link above ??

I had same issue with this, I cannot reach outgoing COM port (COM 6 is outgoing port in my sample) in tools-->Serial ports in Arduino IDE. Is there anyone who can help in this problem? It is quite urgent! Thanks in advance..