Weird pickLine result or coding error?

layer = 10;
graphGroup = 30;
collisionGroups = BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5);
collisionLayers = BIT(10);

Layer = 10;
collisionLayers = BIT(10);   
graphGroup = 1; 
collisionGroups = BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(6) | BIT(30);

function checkLOS(%srcObj, %dstObj)
{
	%result = false;
	
	%srcPosition = %srcObj.getPosition();
	%dstPosition = %dstObj.getPosition();
	
	%srcCollisionGroups = %srcObj.collisionGroups;
	%srcCollisionLayers = %srcObj.collisionLayers;
	
	echo("checkLOS from ", %srcObj.charName, "(", %srcObj, ") to ", %dstObj.charName, "(", %dstObj, ")");
	echo(%srcObj.charName, " collisionGroups is ", %srcObj.collisionGroups);
	echo(%srcObj.charName, " collisionLayers is ", %srcObj.collisionLayers);
	echo(%dstObj.charName, " graphGroup is ", %dstObj.graphGroup);
	echo(%dstObj.charName, " layer is ", %dstObj.layer);	
	
	%pickLineRslt = $levelScene.pickLine(%srcPosition, %dstPosition, %srcCollisionGroups, %srcCollisionLayers, false);
	echo("pickLine result is: ", %pickLineRslt);
	
	if ((getWordCount(%pickLineRslt) == 1) && (%pickLineRslt == %dstObj) && (%dstObj.getVisible()))
		%result = true;
	
	return %result;	
}

Quote:
Natalie is created with obj pointer 1960
New steering created for object Natalie
Yui is created with obj pointer 1964
New steering created for object Yui
Augusto is created with obj pointer 1974
New steering created for object Augusto
Catherina is created with obj pointer 1982
New steering created for object Catherina
Adding AiGoalLookAround for agent Catherina
==>echo(checkLOS($player, $yui));
checkLOS from Natalie(1960) to Yui(1964)
Natalie collisionGroups is 62
Natalie collisionLayers is 1024
Yui graphGroup is 1
Yui layer is 10
pickLine result is: 1964
1
==>echo(checkLOS($player, $catherina));
checkLOS from Natalie(1960) to Catherina(1982)
Natalie collisionGroups is 62
Natalie collisionLayers is 1024
Catherina graphGroup is 1
Catherina layer is 10
pickLine result is:
0
==>echo(checkLOS($yui, $player));
checkLOS from Yui(1964) to Natalie(1960)
Yui collisionGroups is 1073741918
Yui collisionLayers is 1024
Natalie graphGroup is 30
Natalie layer is 10
pickLine result is: 1960 1964
0
==>echo(checkLOS($yui, $catherina));
checkLOS from Yui(1964) to Catherina(1982)
Yui collisionGroups is 1073741918
Yui collisionLayers is 1024
Catherina graphGroup is 1
Catherina layer is 10
pickLine result is: 1964
0
==>echo(checkLOS($catherina, $player));
checkLOS from Catherina(1982) to Natalie(1960)
Catherina collisionGroups is 1073741918
Catherina collisionLayers is 1024
Natalie graphGroup is 30
Natalie layer is 10
pickLine result is: 1960
1
==>echo(checkLOS($catherina, $yui));
checkLOS from Catherina(1982) to Yui(1964)
Catherina collisionGroups is 1073741918
Catherina collisionLayers is 1024
Yui graphGroup is 1
Yui layer is 10
pickLine result is: 1964
1
==>exitDemo();