Echo batch file arrays using a variable for the index?

Question

If I have a batch file and I am setting arrays with an index that is a variable

@echo off
SET x=1
SET myVar[%x%]=happy

How do I echo that t

Answer 1

one way you can do this is to use

call echo %%myVar[%x%]%%

call lets you put variables in places where they wouldn't normally work, if you use the double percents