When the below script is executed, the array variable data received from the test macro function is properly stored, but when $var.size or $var.get(0) is executed, it does not work.

Since $var
works properly, I think the array object was successfully delivered through the macro function. However, I don’t know why $var.size doesn’t work.

What needs to be modified to make it work properly?

#macro (test)
#set ($variable = ["a", "b","c"])
#macro (test)
    #set ($variable = ["a", "b","c"])
$variable##
#end

#macro (test2)
    #set ($var = "#test()")
    $var<br>
    $var.size()<br>
    $var.get(0)<br>
#end

#test2()


=== current result ===
[a, b, c]
$var.size()
$var.get(0)

The expected operational results are as follows.

[a, b, c]
3
a