Show Variant metafield value on frontend

Retired Boards Appdev Store Design
1

Hi, I am trying to show variant metafield value on frontend. I used following code to show it

{% if variant.metafields.dimension_details.variant_length != blank %}
              
                Length
                
                

{{variant.metafields.dimension_details.variant_length}}MM

                
              
              {% endif %}

I have already added the values in metafield. But on frontend, metafield value is not showing.