External Tools Macro

Is there a way to use the current classname inside of the external toosl ?

E.g. my code:

class Baz_Foo{

}

now i need to use Baz_Foo inside of a external tool macro

i've created a external tool

program: C:\Users\rag\AppData\Local\Google\Chrome\Application\chrome.exe
parameter: http://localhost:81/test/admin.php?ragtek_addontools/create-xfcp&classname= and here i need the classname

atm i'm using the selected text macro, but it would save me much time, if i wouln't need to select the classname