diff --git a/src/main/java/org/folio/rest/camunda/controller/advice/WorkflowControllerAdvice.java b/src/main/java/org/folio/rest/camunda/controller/advice/WorkflowControllerAdvice.java
index 37311fef..f733c284 100644
--- a/src/main/java/org/folio/rest/camunda/controller/advice/WorkflowControllerAdvice.java
+++ b/src/main/java/org/folio/rest/camunda/controller/advice/WorkflowControllerAdvice.java
@@ -2,6 +2,7 @@
 
 import lombok.extern.slf4j.Slf4j;
 import org.folio.rest.camunda.exception.WorkflowAlreadyActiveException;
+import org.folio.rest.workflow.exception.SecureOperationException;
 import org.folio.spring.web.model.response.ResponseErrors;
 import org.folio.spring.web.utility.ErrorUtility;
 import org.springframework.http.HttpStatus;
@@ -19,4 +20,12 @@ public ResponseErrors handleWorkflowAlreadyActiveException(WorkflowAlreadyActive
     log.debug(exception.getMessage(), exception);
     return ErrorUtility.buildError(exception, HttpStatus.BAD_REQUEST);
   }
+
+  @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
+  @ExceptionHandler(SecureOperationException.class)
+  public ResponseErrors handleSecureOperationException(SecureOperationException exception) {
+    log.error(exception.getMessage(), exception);
+    return ErrorUtility.buildError(exception, HttpStatus.INTERNAL_SERVER_ERROR);
+  }
+
 }
diff --git a/src/main/java/org/folio/rest/camunda/service/BpmnModelFactory.java b/src/main/java/org/folio/rest/camunda/service/BpmnModelFactory.java
index f3d656db..44801f5e 100644
--- a/src/main/java/org/folio/rest/camunda/service/BpmnModelFactory.java
+++ b/src/main/java/org/folio/rest/camunda/service/BpmnModelFactory.java
@@ -9,6 +9,7 @@
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import jakarta.persistence.Convert;
 import org.apache.commons.lang3.reflect.FieldUtils;
 import org.camunda.bpm.engine.delegate.Expression;
 import org.camunda.bpm.model.bpmn.Bpmn;
@@ -53,6 +54,7 @@
 import org.folio.rest.workflow.model.components.Navigation;
 import org.folio.rest.workflow.model.components.Task;
 import org.folio.rest.workflow.model.components.Wait;
+import org.folio.rest.workflow.model.converter.CryptoConverter;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -77,6 +79,9 @@ public class BpmnModelFactory {
   @Autowired
   private ObjectMapper objectMapper;
 
+  @Autowired
+  private CryptoConverter cryptoConverter;
+
   @Autowired
   private List<AbstractWorkflowDelegate> workflowDelegates;
 
@@ -104,6 +109,7 @@ public BpmnModelInstance fromWorkflow(Workflow workflow) throws ScriptTaskDeseri
 
     setup(model, workflow);
     expressions(model, workflow.getNodes());
+
     return model;
   }
 
@@ -415,7 +421,14 @@ private void expressions(BpmnModelInstance model, List<Node> nodes) {
                 if (Objects.nonNull(value)) {
                   CamundaField field = model.newInstance(CamundaField.class);
                   field.setCamundaName(f.getName());
-                  field.setCamundaStringValue(serialize(value));
+
+                  Convert convert = f.getAnnotation(Convert.class);
+                  if (convert != null && CryptoConverter.class.isAssignableFrom(convert.converter()) && String.class.isAssignableFrom(value.getClass())) {
+                    field.setCamundaExpression(String.format("${cryptoConverter.decrypt(\"%s\")}", cryptoConverter.encrypt(serialize(value))));
+                  } else {
+                    field.setCamundaStringValue(serialize(value));
+                  }
+
                   extensions.addChildElement(field);
                 }
               } catch (JsonProcessingException | IllegalArgumentException | IllegalAccessException e) {