How to reassign the contents of a global variable in Mikrotik?

Question

Mikrotik

All the best!
Something I can’t figure out with global variables in mikrotik, either skiing, or I’m doing something wrong ...
If you work with global variables in the console, then everything is OK, no questions asked, but as soon as I put them into the script, it starts confusion.
src of a primitive script:
:global myVar "up" ;:put $myVar
if you call it later, it will display

up

because if you look through the browser, then the system changed the script to:
:global myVar "up" ;:put "up"
and if you correct it to

:put $myVar

then it doesn't work :(
How to change the values ​​of a global variable correctly?

Answer 1

:global myVar; :set $myVar up ;:put $myVar