I added now [AnotherDatePicker.b4xlib] to the Additional Library and added also something in the manifest editor [
Supported Platforms=B4i, B4J
B4J.DependsOn=jXUI, jDateUtils
B4A.DependsOn=XUI, DateUtils
B4i.DependsOn=iXUI, iDateUtils] but unfortunatelly it doesn't work.