I have a blogger blog with its own domain (I'll call it www.example.com); that's to say: this site used to be a www.example.blogspot.com and I purchased a name domain later; I can continue to manage settings from the Blogger control panel.
Now, another webmaster will write my name on a page of her website and I'd like her to insert a hyperlink to let users be redirected to mine (when they click on my name). BUT I don't want to provide the URL of my website because I'd like to be able to immediately stop redirecting if I change idea (in case I no longer want my website to be associated to others).
This is the reason why I created another blogger blog (I'll call it www.bloggerblog2.blogspot.com) and I'm trying to use this new address to redirect to www.example.com.
I cant't do that from the settings of Blogger because I get an error. More specifically, I'm on
Settings -> Search preferences -> Custom Redirects -> New Redirects. At this point I write the two URL addresses and save but I get the error message
The source and destination values cannot be empty or more than 256 characters and must start with /.
I wonder why I'm getting this error? May I handle this by editing the HTML code of the blog (and how)?