diff --git a/google/cloud/redis/v1beta1/redis_gapic.yaml b/google/cloud/redis/v1beta1/redis_gapic.yaml
index 396ba978..5d2f3098 100644
--- a/google/cloud/redis/v1beta1/redis_gapic.yaml
+++ b/google/cloud/redis/v1beta1/redis_gapic.yaml
@@ -175,6 +175,10 @@ interfaces:
       poll_delay_multiplier: 1.5
       max_poll_delay_millis: 360000 # 6 minutes
       total_poll_timeout_millis: 1200000 # 20 minutes
+    sample_code_init_fields:
+      - instance_id="test_instance"
+      - instance.tier="BASIC"
+      - instance.memory_size_gb=1
   - name: UpdateInstance
     flattening:
       groups:
@@ -197,6 +201,11 @@ interfaces:
       poll_delay_multiplier: 1.5
       max_poll_delay_millis: 360000 # 6 minutes
       total_poll_timeout_millis: 1200000 # 20 minutes
+    sample_code_init_fields:
+      - update_mask.paths[0]="display_name"
+      - update_mask.paths[1]="memory_size_gb"
+      - instance.display_name="UpdatedDisplayName"
+      - instance.memory_size_gb=4
   - name: DeleteInstance
     flattening:
       groups: