diff --git a/AlgebraicDataflowArchitectureModel/src/parser/Parser.java b/AlgebraicDataflowArchitectureModel/src/parser/Parser.java
index 671e934..90b1174 100644
--- a/AlgebraicDataflowArchitectureModel/src/parser/Parser.java
+++ b/AlgebraicDataflowArchitectureModel/src/parser/Parser.java
@@ -454,7 +454,7 @@
 						paramType = ((Term) paramTerm).getType();
 					}
 					Term term = null;
-					if (paramType != null && DataTransferModel.typeInt.isAncestorOf(paramType)) {
+					if (literalOrLeftCurlyBracket.equals(LEFT_CURLY_BRACKET)) {
 						term = new JsonAccessor(DataTransferModel.dotParam);
 					} else {
 						term = new JsonAccessor(DataTransferModel.dot);
@@ -464,6 +464,17 @@
 					expressions.add(term);
 					operator = stream.checkNext();
 					if (operator == null) break;
+					if (operator.equals(COLON)) {
+						// when a type is specified.
+						stream.next();
+						String typeName = stream.next();
+						Type type = model.getType(typeName);
+						if (type == null) {
+							type = new Type(typeName, typeName);
+						}
+						term.setType(type);
+						break;
+					}
 				}
 				if (operator == null) {
 					break;