How to use Automator to input keystrokes into a website

I'm trying to use Automator to create a program so that I can enter course schedule numbers easier. I was able to look onto another post to find a general function. When I ran it the first time, it opened google and entered the course numbers. When I tried to run it again, it would not print the numbers automatically. Any ideas?

This is what I have so far in automator:

*Get Specified Text*

entered the class numbers

*Copy to Clipboard*

*Run AppleScript*

on run {input, parameters}

tell application "Safari"

activate

tell application "System Events"

keystroke "v" using command down

end tell

return input

end tell

end run