diff --git a/src/modeci_mdf/execution_engine.py b/src/modeci_mdf/execution_engine.py
index 50558b49..e5429757 100644
--- a/src/modeci_mdf/execution_engine.py
+++ b/src/modeci_mdf/execution_engine.py
@@ -586,15 +586,26 @@ def evaluate(
 
         if len(self.parameter.conditions) > 0:
             for condition in self.parameter.conditions:
+
+                test = (
+                    condition.test if hasattr(condition, "test") else condition["test"]
+                )
+                value = (
+                    condition.value
+                    if hasattr(condition, "value")
+                    else condition["value"]
+                )
+                cond_id = condition.id if hasattr(condition, "id") else condition["id"]
+
                 cond_mask = evaluate_expr(
-                    condition.test,
+                    test,
                     parameters,
                     verbose=False,
                     array_format=array_format,
                 )
 
                 val_if_true = evaluate_expr(
-                    condition.value,
+                    value,
                     parameters,
                     verbose=False,
                     array_format=array_format,
@@ -603,7 +614,7 @@ def evaluate(
                 if self.verbose:
                     print(
                         " --- Condition: %s: %s = %s: true? %s"
-                        % (condition.id, condition.test, val_if_true, cond_mask)
+                        % (cond_id, test, val_if_true, cond_mask)
                     )
 
                 # e.g. if the parameter value is set only by a set of conditions...
diff --git a/src/modeci_mdf/interfaces/graphviz/exporter.py b/src/modeci_mdf/interfaces/graphviz/exporter.py
index 770b45d2..b928e0bc 100644
--- a/src/modeci_mdf/interfaces/graphviz/exporter.py
+++ b/src/modeci_mdf/interfaces/graphviz/exporter.py
@@ -352,12 +352,20 @@ def mdf_to_graphviz(
                                 p.time_derivative, node
                             )
                         for cond in p.conditions:
-                            test = cond.test.replace(">", "&gt;").replace("<", "&lt;")
+                            cond_test = (
+                                cond.test if hasattr(cond, "test") else cond["test"]
+                            )
+                            cond_value = (
+                                cond.value if hasattr(cond, "value") else cond["value"]
+                            )
+                            cond_id = cond.id if hasattr(cond, "id") else cond["id"]
+
+                            test = cond_test.replace(">", "&gt;").replace("<", "&lt;")
                             v += "<br/><i>{}: </i>IF {} THEN {}={}".format(
-                                cond.id,
+                                cond_id,
                                 match_in_expr(test, node),
                                 format_param(p.id),
-                                match_in_expr(cond.value, node),
+                                match_in_expr(cond_value, node),
                             )
                         info += "<tr><td>{}{} = {}</td></tr>".format(
                             format_label(" "),