:return [[:parse ":global \$1; return [\$1 hello]"]]

:return [:execute ":global $1; :return [$1 hello]"]

:put [:return [[:parse ":global $1; return [$1 hello]"]]]

:global myFunc do={
     :local Ans [[:parse ":global $1; return [$1 $2]"]]
     :set Ans ($Ans+5)
     :return $Ans
}

[$myFunc Func1 Parametr1] 

 :return [[:parse ":global $1 ; :return [\$$1 $2]"]]

[[:parse [/system script get scriptname source]] $arg1 $arg2 varname=$varname ]

# declaring a variable with substituting a value from Layer7 for it
[[:parse ":global $vname [:to$vtype $[/ip firewall layer7 get [find where name=$vname] regexp]]"]]

# Hack with array sorting (by Rextended)
:set hackSort ($hackSort, [[:parse "[:toarray {\"$ymd\"=\"$filename\"}]"]]);

# passing parameters to the script and running it
[[:parse "[:parse [/system script get $msgTxt source]] $Parametr1 $Parametr2"]]

# or the same thing, but with multithreading with parameter passing
:set result "[[:parse [system script get $calledFunctionName source]] ID=$queryID ChatID=$queryChatID]"
:execute script=$result

# or from the file
:execute script="[[:parse [/file get $FileName content]] ID=$queryID ChatID=$queryChatID]"

/system/scripts/function

:global MT do={:global MT; [$MT]; :put $0}

:global MT do={
[[:parse ":global [:pick \$$0 1 [:len \$$0]];  [[:pick \$$0 1 [:len \$$0]]"]]
:put $0
}

[[:parse "[:parse [/system script get $msgTxt source]] $Parametr1 $Parametr2"]]

:global  AnyName do={
:if ($1="test") do={
[[:parse [:parse ":global [:pick \$$0 1 [:len \$$0]]"]]];
[[:parse [:parse "[:pick \$$0 1 [:len \$$0]]"]]]
:put "Recursive call without mentioning the function name works"}
:put OK
}

[$0]

:global  AnyName do={
:if ($1="test") do={
[$0]
:put "Recursive call without mentioning the function name works"}
:put OK
}

[[:parse "global $[:pick $0 1 [:len $0]]; [$0 mama]"]]

:global CountDown do={
:if ($1>0) do={:put $1; :set $1 ($1-1);[[:parse "global $[:pick $0 1 [:len $0]]; [$0 $1]"]];}
:return "end"
}

:put [$CountDown 5]

[[:parse "global $[:pick $0 1 [:len $0]]; [$0 $1 $2 $Par1 $Par2]"]]