QTP - Conditional links count

Hi,

I am new for QTP.

I have so many links in my page. but i want to count particular links among them.
But all links properties are same.
so now i have to add the new property for that group of links and count that.
i added the new property for that links
but i got general error

i add new property for the link in object repository and the object identification
name is val
Value is L

I write the code
Set descrip = description.Create()
descrip("html tag").value = "A"
descrip("val").value = "L"
Set v = Browser("B").Page("P").ChildObjects(descrip)
N=v.count
msgbox N

Plz help me to find out the group of link counts from my web page.