Cannot identify the object "[ WebList ]" while using descriptive programming

[Uma]

Hi
Here,for the weblist I am giving ordinal identifier,and I am passing the value for the property name and I am giving one default value too.

Code:

"Browser("opentitle:="&result,"application version:=internet explorer 7").
Page("title:=RETS Server(.*)","index:=0").WebList("index:=0","name:="&Ty,"select type:=ComboBox Select").
Select "TypeGmd"".

but it always gives the following error,

Cannot identify the object "[ WebList ]" (of class WebList).
Verify that this object's properties match an object currently displayed in your application.

[I checked with the object spy,It has the correct value what i entered here]
Any help?
Thank you
Uma