diff --git a/eive_tmtc/tmtc/payload/scex.py b/eive_tmtc/tmtc/payload/scex.py
index f7fb047..2edcbe9 100644
--- a/eive_tmtc/tmtc/payload/scex.py
+++ b/eive_tmtc/tmtc/payload/scex.py
@@ -17,17 +17,17 @@ USE_SCEX_CONF_FILE = True
 
 
 class OpCode:
-    PING = ["0", "ping"]
-    ION_CMD = ["1", "ion"]
-    TEMP_CMD = ["2", "temp"]
-    EXP_STATUS_CMD = ["3", "expstatus"]
+    PING = "ping"
+    ION_CMD = "ion"
+    TEMP_CMD = "temp"
+    EXP_STATUS_CMD = "expstatus"
 
-    ONE_CELLS_CMD = ["4", "onecell"]
-    ALL_CELLS_CMD = ["5", "allcells"]
-    FRAM = ["6", "fram"]
+    ONE_CELLS_CMD = "onecell"
+    ALL_CELLS_CMD = "allcells"
+    FRAM = "fram"
 
-    SWITCH_ON = ["7", "on"]
-    SWITCH_OFF = ["8", "off"]
+    SWITCH_ON = "on"
+    SWITCH_OFF = "off"
 
 
 class ActionId(enum.IntEnum):
@@ -78,7 +78,7 @@ def add_scex_cmds(defs: TmtcDefinitionWrapper):
 def pack_scex_cmds(p: ServiceProviderParams):  # noqa C901
     op_code = p.op_code
     q = p.queue_helper
-    if op_code in OpCode.SWITCH_ON:
+    if op_code == OpCode.SWITCH_ON:
         q.add_log_cmd(Info.SWITCH_ON)
         q.add_pus_tc(
             PusTelecommand(
@@ -87,7 +87,7 @@ def pack_scex_cmds(p: ServiceProviderParams):  # noqa C901
                 app_data=pack_mode_data(SCEX_HANDLER_ID, Mode.ON, 0),
             )
         )
-    if op_code in OpCode.SWITCH_OFF:
+    if op_code == OpCode.SWITCH_OFF:
         q.add_log_cmd(Info.SWITCH_OFF)
         q.add_pus_tc(
             PusTelecommand(
@@ -96,20 +96,20 @@ def pack_scex_cmds(p: ServiceProviderParams):  # noqa C901
                 app_data=pack_mode_data(SCEX_HANDLER_ID, Mode.OFF, 0),
             )
         )
-    if op_code in OpCode.PING:
+    if op_code == OpCode.PING:
         q.add_log_cmd(Info.PING)
         app_data = bytes([0])
         q.add_pus_tc(create_action_cmd(SCEX_HANDLER_ID, ActionId.PING, app_data))
-    if op_code in OpCode.ION_CMD:
+    if op_code == OpCode.ION_CMD:
         q.add_log_cmd(Info.ION_CMD)
         app_data = bytes([0])
         q.add_pus_tc(create_action_cmd(SCEX_HANDLER_ID, ActionId.ION_CMD, app_data))
-    if op_code in OpCode.TEMP_CMD:
+    if op_code == OpCode.TEMP_CMD:
         q.add_log_cmd(Info.TEMP_CMD)
         app_data = bytes([0])
         q.add_pus_tc(create_action_cmd(SCEX_HANDLER_ID, ActionId.TEMP_CMD, app_data))
 
-    if op_code in OpCode.EXP_STATUS_CMD:
+    if op_code == OpCode.EXP_STATUS_CMD:
         q.add_log_cmd(Info.EXP_STATUS_CMD)
         app_data = bytes([0])
         q.add_pus_tc(
@@ -117,7 +117,7 @@ def pack_scex_cmds(p: ServiceProviderParams):  # noqa C901
         )
 
     # one cell
-    if op_code in OpCode.ONE_CELLS_CMD:
+    if op_code == OpCode.ONE_CELLS_CMD:
         q.add_log_cmd(Info.ONE_CELLS_CMD)
         app_data = bytearray([0])
 
@@ -165,7 +165,7 @@ def pack_scex_cmds(p: ServiceProviderParams):  # noqa C901
             create_action_cmd(SCEX_HANDLER_ID, ActionId.ONE_CELLS_CMD, app_data)
         )
 
-    if op_code in OpCode.ALL_CELLS_CMD:
+    if op_code == OpCode.ALL_CELLS_CMD:
         q.add_log_cmd(Info.ALL_CELLS_CMD)
         app_data = bytearray([0])
 
@@ -197,7 +197,7 @@ def pack_scex_cmds(p: ServiceProviderParams):  # noqa C901
             create_action_cmd(SCEX_HANDLER_ID, ActionId.ALL_CELLS_CMD, app_data)
         )
 
-    if op_code in OpCode.FRAM:
+    if op_code == OpCode.FRAM:
         q.add_log_cmd(Info.FRAM)
         app_data = bytes([0])
         q.add_pus_tc(create_action_cmd(SCEX_HANDLER_ID, ActionId.FRAM, app_data))