Error on adding script source with quotation marks

RouterOS Scripting
1

I’m trying to add simple script to system through terminal and it marks every quotation marks in source in red and doesn’t allow me to add script. Example: system script add source=“:global variable “sdfsdfdgf”” name=test
It marks quotation marks before value of variable. What is wrong with this?
ROS v. 3.9

2 
system script add source=":global variable \"sdfsdfdgf\"" name=test
3

Thank you a lot