diff --git a/components/showcase_component/__init__.py b/components/showcase_component/__init__.py
index bae67fa..2c6bae1 100644
--- a/components/showcase_component/__init__.py
+++ b/components/showcase_component/__init__.py
@@ -21,5 +21,11 @@ CONFIG_SCHEMA = cv.Schema(
 
 def to_code(config):
     var = cg.new_Pvariable(config[CONF_ID])
+
+    upper = await cg.get_variable(config["upper"])
+    cg.add(var.set_upper(upper))
+    lower = await cg.get_variable(config["lower"])
+    cg.add(var.set_lower(lower))
+
     yield cg.register_component(var, config)
     yield i2c.register_i2c_device(var, config)