convert vars to yaml format when templating
diff --git a/roles/simulate-fabric/templates/simulate-fabric-vars.yml.j2 b/roles/simulate-fabric/templates/simulate-fabric-vars.yml.j2
index d1a9926..84a74b7 100644
--- a/roles/simulate-fabric/templates/simulate-fabric-vars.yml.j2
+++ b/roles/simulate-fabric/templates/simulate-fabric-vars.yml.j2
@@ -1,5 +1,6 @@
 ---
 
-simfabric_bridges: {{ simfabric_bridges }}
-simfabric_interfaces: {{ simfabric_interfaces }}
+simfabric_bridges: {{ simfabric_bridges | to_yaml }}
+
+simfabric_interfaces: {{ simfabric_interfaces | to_yaml }}