Mulltiple ranges in same scanner???? ( sensor )

Hello community, I'd love to share this thought with you and consequently get some help.
I'm making a personal avatar scanner with a few open source ones I've found:

list gHere = [];
float maxDistScan = 96.0; 
  
default
{
state_entry()
{
//define current avatar/prim position here 
llSensorRepeat("", "", AGENT, maxDistScan, 2*PI, 1.0);
}

no_sensor()
{
// If nobody is detected, everyone has left
// Go through old list and say that everyone on it has gone
llSetText("no AV to scan", <0,0,0>, 1.0);
if (gHere != []) {
integer f;
integer c = llGetListLength(gHere);
for (f=0; f<c; f++) { // go through old list
llOwnerSay(llList2String(gHere, f) + " has left chat range");
}
gHere = [];
}
}

sensor(integer total_number)
{
string wholedata = (string)total_number + " AVs within 96m\n "; //display number detected
integer f = 0;
integer s = llGetAgentInfo( llDetectedKey(f) );
string status = ""; //certain agent's status
string name;
list here = [];
integer detDist;
vector myPos = llGetPos();
vector detPos = llDetectedPos(f);
detDist = (integer)llVecDist(myPos, detPos);   

for(f=0; f<total_number; f++) {
name = llDetectedName(f);
here += name;

if (llListFindList(gHere, [name]) == -1) llSay(0,"Some text");

if(s & AGENT_AWAY){status += "A ";} //if agent doing any of these things, add appropriate letter to singledata
if(s & AGENT_BUSY){status += "B ";}
if(s & (AGENT_FLYING | AGENT_IN_AIR)){status += "F ";}
if(s & AGENT_MOUSELOOK){status += "M ";}
if(s & AGENT_ON_OBJECT){status += "O ";}
if(s & AGENT_SITTING){status += "S ";}
if(s & AGENT_TYPING){status += "T ";}
if(s & AGENT_WALKING){status += "W ";}
wholedata += name + " (" + (string)llRound(llVecDist(llDetectedPos(f), llGetPos())) + "m) " + status + "\n "; //creates singledata, ex: Sirius Newbold (2m) F
}         

// Now check to see if anyone has left,
// based on the list from the last scan

here = llListSort(here, 1, TRUE); // sort list
integer c = llGetListLength(gHere);
if (here != gHere) { // if new list not the same as old one
for (f=0; f<c; f++) { // go through old list
name = llList2String(gHere, f);
// If anyone on old list is not on new list,
// say that they have left
if (llListFindList(here, [name]) == -1) llOwnerSay(name + " has left the chat range :))");
}
}

// Update old list variable
gHere = here;
   llSetText(wholedata, <1,1,1>, 1.0); //display all data

  }// end of sensor

 
}// end of default

The thing that it is I want it to say to the owner if someone has entered or left chat range. I adapted this:

integer detDist;
vector myPos = llGetPos();
vector detPos = llDetectedPos(f);
detDist = (integer)llVecDist(myPos, detPos);   

/// then I can make this to detect a different range:

if (detDist<=19) {
   llOwnerSay(" name + ("has entered the chat range");
   }
   else if (detDist>19){
   llOwnerSay(" name + ("has entered the chat range");
  }

Now the big problem and my question:

It works and detects a range shorter than the 96.0 I want to scan but the llOwnerSay keep looping and spamming the chat.
and if i use the llListFindList it will assume the 96.0 range i am using with the llSensorRepeat function.
A work around could be a new script just to scan the 19 chat range i want but then it will be more laggy and using more resources.

Any suggestion???


(PS: It might be under my nose, but sharing is golden and I'd love to learn more ))

Instead of just dumping the result of the distance test directly to llOwnerSay, have it save that data in a global variable. Then, test if the new distance check is the same as the previous check. If so, do nothing. If not, inform the owner of the new status. This way you are only informed of changes in status, instead of constantly being informed of the current status.

it won't wok. I need 2 results:
(avatar name) has entered the chat range.
(avatar name) has left the chat range.

within 19 metres of course. in and out that range.

Record the in/out of range status for each agent sensed. When status changes, notify the owner.