Question: Access through code

[CJBH]

Hi there!
Awesome idea this. I have a problem though. I am trying to set min, max and value through code but i keep getting Null Pointer Exception. When i set it in XML it works fine. This is what i try:

npYob.setValue(1971);

This is what i get:
java.lang.NullPointerException: Attempt to invoke virtual method 'void com.michaelmuenzer.android.scrollablennumberpicker.ScrollableNumberPicker.setValue(int)' on a null object reference

[spisakova31]

did you initialize your npYob first?

ScrollableNumberPicker npYob = findViewById(R.id.npYob);
npYob.setValue(1971);