diff --git a/impl/model/src/main/java/io/serverlessworkflow/impl/model/jackson/JacksonModel.java b/impl/model/src/main/java/io/serverlessworkflow/impl/model/jackson/JacksonModel.java
index 5a91c5db..91e59116 100644
--- a/impl/model/src/main/java/io/serverlessworkflow/impl/model/jackson/JacksonModel.java
+++ b/impl/model/src/main/java/io/serverlessworkflow/impl/model/jackson/JacksonModel.java
@@ -55,7 +55,7 @@ public Collection<WorkflowModel> asCollection() {
 
   @Override
   public Optional<String> asText() {
-    return node.isTextual() ? Optional.of(node.asText()) : Optional.empty();
+    return node.isTextual() ? Optional.of(node.asText()) : Optional.of(node.toString());
   }
 
   @Override
diff --git a/impl/model/src/main/java/io/serverlessworkflow/impl/model/jackson/JacksonModelFactory.java b/impl/model/src/main/java/io/serverlessworkflow/impl/model/jackson/JacksonModelFactory.java
index 81020761..8b01935e 100644
--- a/impl/model/src/main/java/io/serverlessworkflow/impl/model/jackson/JacksonModelFactory.java
+++ b/impl/model/src/main/java/io/serverlessworkflow/impl/model/jackson/JacksonModelFactory.java
@@ -15,6 +15,7 @@
  */
 package io.serverlessworkflow.impl.model.jackson;
 
+import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.node.DoubleNode;
 import com.fasterxml.jackson.databind.node.FloatNode;
@@ -86,7 +87,11 @@ public WorkflowModel from(Number number) {
 
   @Override
   public WorkflowModel from(String value) {
-    return new JacksonModel(new TextNode(value));
+    try {
+      return new JacksonModel(JsonUtils.mapper().readTree(value));
+    } catch (JsonProcessingException ex) {
+      return new JacksonModel(new TextNode(value));
+    }
   }
 
   @Override