diff --git a/utils.lua b/utils.lua
--- a/utils.lua
+++ b/utils.lua
@@ -30,19 +30,30 @@ PartyUtils = {
 };
 
 --[[
-	functions, design to simplify some typical actions while developing Instead game
+    functions, design to simplify some typical actions while developing Instead game
 ]]
 EngineUtils = {
-	getValue = function(source, param)
-		local value = "";
-		if (type(source) == "function") then
-			value = source(param);
-		else
-			value = source;
-		end;
-		
-		return value;
-	end;
+    getStringValue = function(source, param)
+        local value = "";
+        if (type(source) == "function") then
+            value = source(param);
+        else
+            value = source;
+        end;
+
+        return value;
+    end;
+
+    getValue = function(source, param)
+        local value = nil;
+        if (type(source) == "function") then
+            value = source(param);
+        else
+            value = source;
+        end;
+
+        return value;
+    end;
 };
 
 --[[