diff --git a/seeds/example_pop/example_1.txt b/seeds/example_pop/example_1.txt
index b9399117..27a9a317 100644
--- a/seeds/example_pop/example_1.txt
+++ b/seeds/example_pop/example_1.txt
@@ -2,7 +2,7 @@ Generation:
 50
 
 Phenotype:
-np.tanh(np.sin(plog(np.sin(np.sin(np.sin(x[2]*np.tanh(plog(np.sin(np.tanh(psqrt(psqrt(x[2])))))))))+plog(plog(np.sin(plog(psqrt(x[3]))))))))
+np.tanh(np.sin(plog(np.sin(np.sin(np.sin(x[2]*np.tanh(plog(np.sin(np.tanh(psqrt(psqrt(x[2])))))))))+plog(plog(np.sin(plog(psqrt(x[:, 3]))))))))
 
 Genotype:
 [13836, 62075, 23, 73785, 79625, 57320, 20, 47222, 8741, 79326, 23, 44930, 79326, 76084, 48214, 73706, 23, 23, 21605, 67643, 19, 39372, 81838, 23, 20, 19, 24]
@@ -12,4 +12,4 @@ None
 Training fitness:
 0.033550399872
 Test fitness:
-0.0304362796265
\ No newline at end of file
+0.0304362796265
diff --git a/seeds/example_pop/example_2.txt b/seeds/example_pop/example_2.txt
index ffd6ef06..9c179e79 100644
--- a/seeds/example_pop/example_2.txt
+++ b/seeds/example_pop/example_2.txt
@@ -1,2 +1,2 @@
 Phenotype:
-np.tanh(plog(np.sin(psqrt(x[3]))))
\ No newline at end of file
+np.tanh(plog(np.sin(psqrt(x[:, 3]))))
diff --git a/seeds/example_pop/example_4.txt b/seeds/example_pop/example_4.txt
index 5b94d0b4..0c287903 100644
--- a/seeds/example_pop/example_4.txt
+++ b/seeds/example_pop/example_4.txt
@@ -1 +1 @@
-np.tanh(np.sin(plog(np.sin(np.sin(np.sin(x[2]*np.tanh(plog(np.sin(np.tanh(psqrt(psqrt(x[2])))))))))+plog(plog(np.sin(plog(psqrt(x[3]))))))))
\ No newline at end of file
+np.tanh(np.sin(plog(np.sin(np.sin(np.sin(x[:, 2]*np.tanh(plog(np.sin(np.tanh(psqrt(psqrt(x[:, 2])))))))))+plog(plog(np.sin(plog(psqrt(x[:, 3]))))))))