diff --git a/simulations/awgn/sim.grc b/simulations/awgn/sim.grc
index 7f9abb9..e4748e2 100644
--- a/simulations/awgn/sim.grc
+++ b/simulations/awgn/sim.grc
@@ -81,6 +81,33 @@
       <value></value>
     </param>
   </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 260)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>filename</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value> "results/sim_%d_%d_%.1f_.pcap" % (repetition, encoding, snr)</value>
+    </param>
+  </block>
   <block>
     <key>variable</key>
     <param>
@@ -238,7 +265,7 @@
     </param>
     <param>
       <key>file</key>
-      <value>" + os.path.dirname(os.path.realpath(__file__)) + "/results/sim_%d_%d_%.1f_.pcap" % (repetition, encoding, snr) + "</value>
+      <value>filename</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -642,37 +669,6 @@ corresponds to BPSK 1/2, ..., 64-QAM 3/4</value>
       <value>import random</value>
     </param>
   </block>
-  <block>
-    <key>import</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(8, 268)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>import_1_0</value>
-    </param>
-    <param>
-      <key>import</key>
-      <value>import os</value>
-    </param>
-  </block>
   <block>
     <key>parameter</key>
     <param>
diff --git a/simulations/sensitivity/sim.grc b/simulations/sensitivity/sim.grc
index e8d6a82..23489a8 100644
--- a/simulations/sensitivity/sim.grc
+++ b/simulations/sensitivity/sim.grc
@@ -81,6 +81,33 @@
       <value></value>
     </param>
   </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 244)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>filename</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>"results/sim_%d_%.2f_%.1f_.pcap" % (repetition, sensitivity, snr)</value>
+    </param>
+  </block>
   <block>
     <key>variable</key>
     <param>
@@ -132,7 +159,7 @@
     </param>
     <param>
       <key>file</key>
-      <value>" + os.path.dirname(os.path.realpath(__file__)) + "/results/sim_%d_%.2f_%.1f_.pcap" % (repetition, sensitivity, snr) + "</value>
+      <value>filename</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -598,37 +625,6 @@
       <value>import random</value>
     </param>
   </block>
-  <block>
-    <key>import</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(8, 244)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>import_0_0_0</value>
-    </param>
-    <param>
-      <key>import</key>
-      <value>import os</value>
-    </param>
-  </block>
   <block>
     <key>parameter</key>
     <param>