Unknown symbol

I have this problem when I run my .mod file. Anybody see the error?

Starting Dynare (version 4.4.2).
Starting preprocessing of the model file …
ERROR: NKSOE_simple_1g2.mod: line 140, cols 33-40: Unknown symbol: ppi_H_ss

Error using dynare (line 174)
DYNARE: preprocessing failed
NKSOE_simple_1g2.mod (7.47 KB)

You use and initialize

but you never defined it as a parameter.

Thanks! You’re right, I got confused.

Now, I’m getting this error:

Starting Dynare (version 4.4.2).
Starting preprocessing of the model file …
WARNING: NKSOE_simple_1g2.mod:32.12-35.11: Symbol GAMMA_ppi_H declared twice.
ERROR: NKSOE_simple_1g2.mod: line 35, col 12: syntax error, unexpected EQUAL
NKSOE_simple_1g2.mod (7.52 KB)

Nevermind, solved it! Thanks, again!