plugins in parser pass variable

Hi All
Do plugins in parser pass variable?

as an example
{+ foo bar="{bash}" +}

where bash is a variable
thanks before

nope. only constant values

i have found the solution.
public static function foo(array $param) : string
return sprintf("{%s}", $param['bar']) ;
}
   
    public static function btnRead(array $arg=NULL)tring
    {
        return $arg['path'] . '{'. $arg['file'].'}.docx';
        return json_encode($arg);
    }


    public static function btnRead(array $arg=NULL):string
    {
        return $arg['path'] . '{'. $arg['file'].'}.docx';
        return json_encode($arg);