Dynamically setting RadioButton checked

[Malibu]

I'm developing Android app and I have one problem. I have Radiobutton group:\[code\]<RadioGroup android:layout_width="wrap_content" android:layout_height="wrap_content" ><RadioButtonandroid:id="@+id/niezakonczoneRadio"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginBottom="4dp"android:layout_marginLeft="6dp"android:layout_marginRight="14dp"android:layout_marginTop="0dp"androidnClick="niezakonczoneRadio"android:text="Niezako