diff --git a/util/PrismFormulaPrinter.cpp b/util/PrismFormulaPrinter.cpp
index 4f1d4d1..a873b38 100644
--- a/util/PrismFormulaPrinter.cpp
+++ b/util/PrismFormulaPrinter.cpp
@@ -20,26 +20,26 @@ std::string vectorToDisjunction(const std::vector<std::string> &formulae) {
 }
 
 std::string cellToConjunction(const AgentName &agentName, const cell &c) {
-  return "x" + agentName + "=" + std::to_string(c.column) + "&y" + agentName + "=" + std::to_string(c.row);
+  return "col" + agentName + "=" + std::to_string(c.column) + "&row" + agentName + "=" + std::to_string(c.row);
 }
 
 std::string cellToConjunctionWithOffset(const AgentName &agentName, const cell &c, const std::string &xOffset, const std::string &yOffset){
-  return "x" + agentName + xOffset + "=" + std::to_string(c.column) + "&y" + agentName + yOffset + "=" + std::to_string(c.row);
+  return "col" + agentName + xOffset + "=" + std::to_string(c.column) + "&row" + agentName + yOffset + "=" + std::to_string(c.row);
 }
 
 std::string coordinatesToConjunction(const AgentName &agentName, const coordinates &c, const ViewDirection viewDirection) {
-  return "x" + agentName + "=" + std::to_string(c.first) + "&y" + agentName + "=" + std::to_string(c.second) + "&view" + agentName + "=" + std::to_string(viewDirection);
+  return "col" + agentName + "=" + std::to_string(c.first) + "&row" + agentName + "=" + std::to_string(c.second) + "&view" + agentName + "=" + std::to_string(viewDirection);
 }
 
 std::string objectPositionToConjunction(const AgentName &agentName, const std::string &identifier, const std::pair<int, int> &relativePosition) {
   std::string xOffset = oneOffToString(relativePosition.first);
   std::string yOffset = oneOffToString(relativePosition.second);
-  return "x" + agentName + xOffset + "=x" + identifier + "&y" + agentName + yOffset + "=y" + identifier;
+  return "col" + agentName + xOffset + "=col" + identifier + "&row" + agentName + yOffset + "=row" + identifier;
 }
 std::string objectPositionToConjunction(const AgentName &agentName, const std::string &identifier, const std::pair<int, int> &relativePosition, const ViewDirection viewDirection) {
   std::string xOffset = oneOffToString(relativePosition.first);
   std::string yOffset = oneOffToString(relativePosition.second);
-  return "x" + agentName + xOffset + "=x" + identifier + "&y" + agentName + yOffset + "=y" + identifier + "&view" + agentName + "=" + std::to_string(viewDirection);
+  return "col" + agentName + xOffset + "=col" + identifier + "&row" + agentName + yOffset + "=row" + identifier + "&view" + agentName + "=" + std::to_string(viewDirection);
 }
 
 std::map<ViewDirection, coordinates> getAdjacentCells(const cell &c) {
diff --git a/util/PrismModulesPrinter.cpp b/util/PrismModulesPrinter.cpp
index 4adc004..5c2020c 100644
--- a/util/PrismModulesPrinter.cpp
+++ b/util/PrismModulesPrinter.cpp
@@ -9,10 +9,10 @@
 #define FORWARD 2
 
 
-std::string northUpdate(const AgentName &a) { return "(y"+a+"'=y"+a+"-1)"; }
-std::string southUpdate(const AgentName &a) { return "(y"+a+"'=y"+a+"+1)"; }
-std::string eastUpdate(const AgentName &a)  { return "(x"+a+"'=x"+a+"+1)"; }
-std::string westUpdate(const AgentName &a)  { return "(x"+a+"'=x"+a+"-1)"; }
+std::string northUpdate(const AgentName &a) { return "(row"+a+"'=row"+a+"-1)"; }
+std::string southUpdate(const AgentName &a) { return "(row"+a+"'=row"+a+"+1)"; }
+std::string eastUpdate(const AgentName &a)  { return "(col"+a+"'=col"+a+"+1)"; }
+std::string westUpdate(const AgentName &a)  { return "(col"+a+"'=col"+a+"-1)"; }
 
 namespace prism {
 
@@ -167,8 +167,8 @@ namespace prism {
 
   void PrismModulesPrinter::printRobotModule(const AgentName &agentName, const coordinates &initialPosition) {
     os << "\nmodule " << agentName << std::endl;
-    os << "\tx"    << agentName << " : [1.." << maxBoundaries.second  << "] init " << initialPosition.second << ";\n";
-    os << "\ty"    << agentName << " : [1.." << maxBoundaries.first << "] init " << initialPosition.first << ";\n";
+    os << "\tcol"    << agentName << " : [1.." << maxBoundaries.second  << "] init " << initialPosition.second << ";\n";
+    os << "\trow"    << agentName << " : [1.." << maxBoundaries.first << "] init " << initialPosition.first << ";\n";
     os << "\tview" << agentName << " : [0..3] init 1;\n";
 
     printTurnActionsForRobot(agentName);