Fixed wrong variable in Franke3D function

Author: timo-schrader

src/precice-aste-evaluate

@@ -148,7 +148,7 @@ class Calculator:
         pre_def_functions = {
             "franke3d": "0.75*exp(-((9*x-2)^2+(9*y-2)^2+(9*z-2)^2)/4)"
             "+0.75*exp(-((9*x+1)^2/49+(9*y+1)/10+(9*z+1)/10))"
-            "+0.5*exp(-((9*x-7)^2+(9*y-3)^2+(9*y-5)^2)/4)"
+            "+0.5*exp(-((9*x-7)^2+(9*y-3)^2+(9*z-5)^2)/4)"
             "-0.2*exp(-((9*x-4)^2+(9*y-7)^2+(9*z-5)^2))",
             "eggholder3d": "-x*sin(sqrt(abs(x-y-47)))-(y+47)*sin(sqrt(abs(0.5*x+y+47)))"
             "-y*sin(sqrt(abs(y-z-47)))-(z+47)*sin(sqrt(abs(0.5*y+z+47)))",