diff --git a/src/fmpy/model_description.py b/src/fmpy/model_description.py
index 5a0ab0fd..744270f2 100644
--- a/src/fmpy/model_description.py
+++ b/src/fmpy/model_description.py
@@ -1453,6 +1453,10 @@ def set_attributes(element, object, attributes):
             Alias.set("description", alias.description)
             Alias.set("displayUnit", alias.displayUnit)
 
+        for dimension in variable.dimensions:
+            Dimension = SubElement(ModelVariable, "Dimension")
+            set_attributes(Dimension, dimension, [("start", None), ("valueReference", None)])
+
     ModelStructure = SubElement(root, "ModelStructure")
 
     for element_name, unknowns in [