EViews.com

I using Eviews 8, and am trying to get the average absolute percentage change of a series
!AAPC = @mean(@abs(@pc(_yhat)))

and I get an error

@PC is an illegal or reserved name in "!AAPC = @MEAN(@ABS(@PC(_YHAT)))

or

for mean absolute error

!MAE = @sum(@abs( _yer)))/!h

!MAE is not defined or is an illegal command in "!MAE = @SUM(@ABS( _YER)))/13"

Is there something I am missing

The @pc function only works for series destinations, not program variable or matrix destinations. You could generate a series with the values on the RHS of your expression, then grab the value using the @min, @max, @mean, etc. As to the other error, are you typing this in the command window or is this included in a program file that you are running?

I was trying to run this code in a program not on command line

For the last error, you have a syntax error - two open parens and three close parens.