[Q] android:pathPattern not working topic

I want to start my activity in android with link of

www.youtube.com/watchXXXXXXXXX

i have written this code in my manifest file.
i dont knw which mistake i am making.
Please help me
this is my xml :

<activity
android:name=".TempActivity"
android:label="@string/title_activity_temp" >
<intent-filter>
<action android:name="android.intent.action.VIEW"/>
<category android:name="android.intent.category.DEFAULT"/>
<category android:name="android.intent.category.BROWSABLE"/>

<data
android:scheme="http"
android:host="www.youtube.com"
android:pathPattern="watch*"/>
</intent-filter>

</activity>