DIM MyMap As MAP 
MyMap = {"name": "jd", "value": 100}
IF "Lall" IN MyMap THEN PRINT "Key exists!"

MyArray = [10, 20, 30]
IF 20 IN MyArray THEN PRINT "Value exists!"

MyString$ = "Hello jdBasic"
IF "Basic" IN MyString$ THEN PRINT "Substring exists!"
