diff --git a/dataModels/src/main/java/edu/utah/ece/async/ibiosim/dataModels/biomodel/parser/BioModel.java b/dataModels/src/main/java/edu/utah/ece/async/ibiosim/dataModels/biomodel/parser/BioModel.java
index d6a1d9ce5..3e534ec7a 100644
--- a/dataModels/src/main/java/edu/utah/ece/async/ibiosim/dataModels/biomodel/parser/BioModel.java
+++ b/dataModels/src/main/java/edu/utah/ece/async/ibiosim/dataModels/biomodel/parser/BioModel.java
@@ -7159,6 +7159,7 @@ public class BioModel extends CoreObservable{
 		s = s.replace("/"," / ");
 		s = s.replace("-"," - ");
 		s = s.replace("%"," % ");
+		s = s.replace("^"," ^ ");
 		s = s.replace("&&"," && ");
 		s = s.replace("||"," || ");
 		s = s.replace(">", " > ").replace("> =",">=");
@@ -7171,6 +7172,7 @@ public class BioModel extends CoreObservable{
 		do { 
 			olds = s;
 			s = s.replace("," + origVar + ",", "," + newVar + ",");
+			s = s.replace(" " + origVar + ",", " " + newVar + ",");
 			s = s.replace(" " + origVar + " ", " " + newVar + " ");
 			s = s.replace("," + origVar + ")", "," + newVar + ")");
 			s = s.replace(" " + origVar + "(", " " + newVar + "(");