Using rsolve with hp prime

[wawa]

I think I figured out the problem : I have a CAS variable named n with a value of 0.

Now my problem is to purge this variable. I tried purge(n) and purge() but with no success

Edit : It works ! I had a Hanoi program with an "EXPORT ...,n,..." command inside. I deleted this program and my variable n disapeared. The rsolve command is now running properly