Effect sizes in procedutre mixed

Posted by Kornbrot, Diana on Feb 17, 2013; 7:16pm
URL: http://spssx-discussion.165.s1.nabble.com/SPSS-error-regression-coefficient-standard-error-does-not-fit-with-significance-level-tp5718081p5718108.html

Is there any simple code to obtain partial eta square for predictors in procedure mixed?
Help much appreciated
Best
Diana