diff --git a/docs/configes sample/basic_config.json b/docs/configes sample/basic_config.json
index cb781d3..9fb2c19 100644
--- a/docs/configes sample/basic_config.json	
+++ b/docs/configes sample/basic_config.json	
@@ -10,6 +10,9 @@
         }
     },
     "basic_number": {
-        "name" : ["float", "int", ["unit"], ["unit"], "name = float × 10^int × unit(s) ÷ unit(s)"]
+        "name": ["float", "int", ["unit"], ["unit"], "name = float × 10^int × unit(s) ÷ unit(s)"]
+    },
+    "basic_force" : {
+        "name": ["x", "y", "x&y format:basic_number/unit1:[m]/unit2:[]"]
     }
 }
\ No newline at end of file
diff --git a/docs/configes sample/in_file_config.json b/docs/configes sample/in_file_config.json
index 15e0802..a28c04d 100644
--- a/docs/configes sample/in_file_config.json	
+++ b/docs/configes sample/in_file_config.json	
@@ -2,7 +2,8 @@
     "Game_threads": {
         "orbit_demo": {
             "ship_info": {
-                "mass" : "basic_config:basic_number"
+                "mass": "basic_config:basic_number",
+                "force": "basic_config:basic_force"
             }
         }
     }
diff --git a/libs/Game_threads/orbit_demo.py b/libs/Game_threads/orbit_demo.py
index 94c5045..7ca38bc 100644
--- a/libs/Game_threads/orbit_demo.py
+++ b/libs/Game_threads/orbit_demo.py
@@ -15,7 +15,7 @@ class Orbit_demo(threading.Thread):
         # father class __init__()
         threading.Thread.__init__(self)
         # dic
-        self.ship_info = {"mass": [1, 5, ["kg"], []],}
+        self.ship_info = {"mass": [1, 5, ["kg"], []], "force": []}
         self.planet_system = {"Solar System": {"planets": {"smearth": {"description": "", "gravity": 9.81, "radius": 63710000, "map_color": [103, 157, 255]}}}}
         self.main_ship_parts = {}
         self.this_planet_info = {}