Clear Variable in NSIS

i must be missing something important in NSIS Var command.
Var
[/GLOBAL] var_name
Declare a user variable. Allowed characters for variables names: [a-z][A-Z][0-9] and '_'. All defined variables are global, even if defined in a section or a function. To make this clear, variables defined in a section or a function must use the /GLOBAL flag. The /GLOBAL flag is not required outside of sections and functions.

Var example

Function testVar
Var /GLOBAL example2

StrCpy $example "example value"
StrCpy $example2 "another example value"
FunctionEnd

but i cant make it clear the variable
ive tried Var /GLOBAL 1
ive tried Var /GLOBAL $1
ive tried alot of things and i just dont understand it

could anyone help me?
Please???