welcome, i am on the way to develop a block like this [pi.JPG] and i coded package edu.hifiapps.Mathy; import com.google.appinventor.components.annotations.; import com.google.appinventor.components.runtime.; import com.google.appinventor.components.common.*; import java.lang.Math; @Des…

may be but really as it said it is a "double" value i did as @SimpleFunction(description = "") public double Pi() { return (float)Math.PI; }