xpath substring with case insensitivity

[rhitam30111985]

Hi all , i need some validation

I have an xml like this :

<root>
    <url newurl="aTom Bomb" />
    <url newurl ="tOm and Jerry" />
    <url newurl ="TomBoy" />
    <url newurl ="Random string" />
</root>

Now , my aim is to select all the url elements where the newurl attribute contains the word "tom" despite the case. I am using the xpath like this :

var String ="TOM";
var  xpath = "//url[contains(translate(@newurl, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'),'" +  String.toLowerCase()+"')]";

I am not sure since sometimes it returns correct result and sometime it doesnt ...

Would appreciate any help.

[jkmyoung]

Could you post examples of when it returns the correct result and when it doesn't? Can't see anything immediately wrong with what you've provided.