nano, sent selected text to a script

How can you sent selected text to a script? I want to select text with shift+arrows, press e.g. ctrl+c and then the selected text should be sent to my script either as a parameter or as stdin. Been playing with the function {execute} in the nanorc file...I know it's not even close to the solution, I might have to use a complete different function and syntax....but which?

bind ^c "{execute}|tocb" main

*(my script is called tocb)*