How to trigger my plugin when special message received from my contact?
I use Delphi Version of SDK.
I have tried TMPPlugin's Notify property, but found that it can only trigger by a TMPCommands. Can it get notified when receive a certain message from my contact? Or there is another way to complete this with a plugin.

Really needs your help,Buddy.

Have you read the docs about ReceiveNotify? It is only called if a message starts with sCCNotify. You should prepend sCCNotify to your message (and a five-char code) to trigger your plugin.

Thank you for your reply. What I want to complete is describe as below: 
1. My Contact type ?queryTheQueryCommand
2. I reply him with the result

My Contact havent installed the MsgPlus! and my plugin. So I need the sCCNotify  to be Normal Text.
I've try change  sCCNotify to #47 (symbol /), and my contact sent me with a '/NTEST', but the notify didnt  be triggered.

Where is the problem?

sCCNotify is the value it is because it HAS to be that value.

Oh, that means there's no way that contact manual input message(without a MsgPlus plugin) can trigger my plugin, right?