diff --git a/fuenfteabgabe.c b/fuenfteabgabe.c
index 255613b..d4debd9 100644
--- a/fuenfteabgabe.c
+++ b/fuenfteabgabe.c
@@ -125,13 +125,18 @@ void nextu(soli_param *sp) {
                                                 
                  unp[j]=(2*(d/h) *(un[j+1]+un[j]+un[j-1])*(un[j+1]-un[j-1]))-(d/((h*h*h))*(un[j+2]-2*un[j+1]+2*un[j-1]-un[j-2]) ) +unm[j];                     
 			}
+			//unm[j]=un[j];
+            //un[j]=unp[j];
 			
 
 		}
+		for (int j = 0; j < jmax; j++) {
+    		  unm[j]=un[j];
+    		  un[j]=unp[j];
+            }
+		
 		
-		unm=un;
-		un=unp;
-        x=sp->xmin;
+        
         
 
 	}
@@ -151,8 +156,8 @@ void nextu(soli_param *sp) {
 int main(void) {
     soli_param sp;
     sp.N = 1;
-    sp.h=0.2;
-    sp.d=pow(sp.h,3)/4;
+    sp.h=0.1;
+    sp.d=0.0001;
     sp.tmax=1;
     sp.tmin=0;
     sp.xmin=-30;