The brackets mean nothing, they’re just characters to display and have no effect on how the command works. Gaps are included as long as the command is enclosed in quotes.
For example:-
say_team Hello World would display hello
say_team “Hello World” would display hello world
say_team )[{{)] Hello World [(}}[( would display )[{{)]
say_team “)[{{)] Hello World [(}}[(” would display )[{{)] hello world [(}}[(
set msg “say_team )[{{)] Hello World [(}}[(”
vstr msg
would display )[{{)] Hello World [(}}[(
You just need to put the say_team command in it’s own variable and execute the variable with vstr in order to preserve case.