adding android:widgetCategory="keyguard|home_screen" while still supporting older sdk

I am trying to modify my widget so that it supports being placed on 4.2 lockscreens. However I still want to support older SDK's. I added ``` android:widgetCategory="keyguard|home_screen" ``` to my appwidget-provider in res/xml, but eclipse complains that there is "no resource identifier found for attribute widetCategory in package android' If I raise the minSdkVerion to 17 everything works fine, but I want to still support older SDKs. I have tried using resource qualifiers creating a separte res/xml-v17/mywidget.xml and only adding the tag there, but the error still appears. Thanks for any help. Edit: I figured it out. using a res/xml-v17/ folder is the answer. I just had to change the build target for my project to 17 / 4.2.