Who should I add as a counselor on Common app

<p>greetings,
I am an International Student looking to apply to US colleges. I don't know whom I should add as my counselor. I changed my school one and a half years ago. The staff barely knows me at my current school. On the other hand, I was a favorite at my old school and my old school teachers will readily provide me any help, support and letters of recommendations. Can I add the counselor from my previous school?
The common app form asks for my current school and my counselor under that section.
Can i add my new school and previous school counselor? Should I fill in my old school and counselor?
Thanks</p>