How to use built-in variables in my local variables?

[pingsoli]

描述讨论详情

target("test")
    local my_test_path = "../$(plat)/$(mode)/"
    print(my_test_path)

the print:

../$(plat)/$(mode)/

even I run xmake f -m debug, nothing changed.

[waruqi]

use option, https://xmake.io/#/manual/configuration_option

and do not use print() in description scope. https://xmake.io/#/guide/syntax_description