Remove extra " characters when a StringProperty is set by a string

src/properties/stringproperty.cpp

@@ -42,7 +42,15 @@ REGISTER_TEMPLATEPROPERTY_SOURCE(StringProperty, std::string, "",
 		return true;
 	},
 [](std::string value, bool& success) -> std::string {
-    success = true;
+    // An incoming string is of the form
+    // "value"
+    // so we want to remove the leading and trailing " characters
+    if (value.size() > 2 && (value[0] == '"' && value[value.size() - 1] == '"')) {
+        // Removing the first and last "
+        success = true;
+        return value.substr(1, value.size() - 2);
+    }
+    success = false;
     return value;
 },
 [](std::string& outValue, std::string inValue) -> bool {