Setting a listen channel from a notecard

I'm trying to set a listen channel from a notecard, but I'm having trouble getting it to work.

the notecard is one line with a number that I want to set the Listen channel to.

17

This is the script:

integer channel;				// not assigning this variable set it to 0
string gName = "New Note";	 // notecard line 1 is 17, so we should be listening to channel 12
integer gLine = 0;			 // current line number
key gQueryID;				 // id used to identify dataserver queries
 
default
{
 
	state_entry()	
	{
		gQueryID = llGetNotecardLine(gName, gLine);	// request first line
		llListen(channel, "", NULL_KEY, "");
		llSay(0, "state_entry channel set to " + (string)channel);
	}
 
	listen(integer channel, string name, key id, string message)
	{
		llSay(0, "Button Pushed");
	}
	dataserver(key query_id, string data)
	 {
		if (query_id == gQueryID)
			{
			if (data != EOF)	 // not at the end of the notecard
				{
				channel = (integer)data;
				llSay(0, "Channel should be set to " + data);
				llSay(0, "Now the script is listening to channel " + (string)channel);
				}
			}
	}
 
	touch_start(integer num)
 
	{
	llDialog(llDetectedKey(0), "test script", ["test"], channel);
	}
 
}

The output from the script on reset is:

Object: state_entry channel set to 0
Object: Channel should be set to 17
Object: Now the script is listening to channel 17

and touching the menu button yields no result

But, if I edit the line in the notecard to be "0",

the script runs correctly:

Object: state_entry channel set to 0
Object: Channel should be set to 0
Object: Now the script is listening to channel 0
You: test
Object: Button Pushed

which is correct.

Can someone point me in the right direction, so that I can set the listen channel from a notecard?

Thanks,

Sam

The llListen(channel, "", NULL_KEY, "");
should be put into your dataserver event after you set the channel variable (ie after the line channel = (integer)data

Where you have it at the moment, it is listening to channel 0.

Thanks, Russel. I knew it had to be something simple, just couldn't wrap my mind around it. This is my first script that reads data off a notecard.


Regards,

Sam

Remember to llListenRemove your old listener.

Ever since someone let me know about the llListenControl function, I don't think I'll ever use llListen again if I can help it.

After looking into llListenControl, I've started editing all my scripts with listens to use the control. Great tip. Thanks.

Sam