I figured this out myself. It seems that this cannot be done. I simply used a single integer value in the widget, and it worked.
<widget android-versionCode="1" id="abm.app.response" ios-CFBundleVersion="1" version="3.1"
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…