Hi, I'm new to this and I just wanted to ask how you make a script which only lets a command work for a person you've specified. E.g. if a friend you have specified types /hello then the command does something but if another contact does the same command but you have not activated the command for his email address, then it won't do anything. Thanks for any help.

Because the email address of the sent message isn't provided you have to do a few checks on the message.

code:

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var aEmailAddresses = new Array('johndoe@hotmail.com', 'billgates@microsoft.com');
var oChatWndMessageSent = {};

function OnEvent_ChatWndSendMessage(oChatWnd, sMessage) { oChatWndMessageSent[oChatWnd.Handle] = sMessage; }

function OnEvent_ChatWndReceiveMessage(oChatWnd, sOrigin, sMessage, nMessageType) {
    if ( oChatWndMessageSent[oChatWnd.Handle] !== sMessage && sOrigin !== Messenger.MyName ) {
        for ( var oContact = new Enumerator(oChatWnd.Contacts); !oContact.atEnd(); oContact.moveNext() ) {
            for ( var i in aEmailAddresses ) {
                if ( oContact.item().Email === aEmailAddresses[i] && oContact.item().Name === sOrigin) {
                    // do stuff here
                }
            }
        }
    }
}

function OnEvent_ChatWndDestroyed(oChatWnd) { delete oChatWndMessageSent[oChatWnd.Handle]; }

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Thankyou very much for a helpful answer and a detailed explanation.