What i need for it?

[Rolig Loon]

You want to know the name of the link that you touched?

When you use any of the llDetected * functions, the value in parentheses is always the number associated with one of the people who have just triggered the event.  In a touch_start event, it is extremely rare for more than one person to trigger the event simultaneously, so you will always write

llDetectedKey(0)  or

llDetectedTouchST(0) or, in your case,

llDetectedLinkNumber(0).

You are looking for the name of the link that was touched by that person, thus

string name = llGetLinkName(llDetectedLinkNumber(0));

On the other hand, if you are actually interested in getting the name of link number 12, and you don't care what the avatar touches to get that information, you write

string name = llGetLinkName(12);

 

 

[Rolig Loon]

You want to know the name of the link that you touched?

When you use any of the llDetected * functions, the value in parentheses is always the number associated with one of the people who have just triggered the event.  In a touch_start event, it is extremely rare for more than one person to trigger the event simultaneously, so you will always write

llDetectedKey(0)  or

llDetectedTouchST(0) or, in your case,

llDetectedLinkNumber(0).

You are looking for the name of the link that was touched by that person, thus

string name = llGetLinkName(llDetectedLinkNumber(0));

On the other hand, if you are actually interested in getting the name of link number 12, and you don't care what the avatar touches to get that information, you write

string name = llGetLinkName(12);

 

 

[Innula Zenovka]

If you want to know the number of the face you just touched, try 

default{	 touch_start(integer num_detected)	 {	 	integer iLinkNo = llDetectedLinkNumber(0);	 	integer iFaceNo = llDetectedTouchFace(0);	 	llOwnerSay("You touched face number "+(string)iFaceNo+" of link number "+(string)iLinkNo);	 }}