diff --git a/cfg/sea/hvolt_short.stick.json b/cfg/sea/hvolt_short.stick.json
index 48c403e..9a36236 100644
--- a/cfg/sea/hvolt_short.stick.json
+++ b/cfg/sea/hvolt_short.stick.json
@@ -1,5 +1,5 @@
 {"hcp": {"base": "/hcp", "params": [
-{"path": "", "type": "float", "kids": 10},
+{"path": "", "type": "float", "readonly": false, "cmd": "hcp set", "kids": 10},
 {"path": "send", "type": "text", "readonly": false, "cmd": "hcp send", "visibility": 3},
 {"path": "status", "type": "text", "visibility": 3},
 {"path": "set", "type": "float", "readonly": false, "cmd": "hcp set"},
diff --git a/cfg/stick/hvolt_short_cfg.py b/cfg/stick/hvolt_short_cfg.py
index 8256e83..de1bc93 100644
--- a/cfg/stick/hvolt_short_cfg.py
+++ b/cfg/stick/hvolt_short_cfg.py
@@ -18,7 +18,7 @@ Mod('ts',
 )
 
 Mod('hcp',
-    'frappy_psi.sea.SeaReadable', '',
+    'frappy_psi.sea.SeaWritable', '',
     io='sea_stick',
     sea_object='hcp',
 )