diff --git a/res/layouts/console.xml b/res/layouts/console.xml
index 6991d3f8..ec728c68 100644
--- a/res/layouts/console.xml
+++ b/res/layouts/console.xml
@@ -1,3 +1,5 @@
 <container size='400' color='#00000080' size-func="unpack(gui.get_viewport())">
-    <textbox id='prompt' margin='0' gravity='bottom-left' size-func="gui.get_viewport()[1],40"></textbox>
+    <textbox id='log' margin='0' multiline='true' size-func="gui.get_viewport()[1],gui.get_viewport()[2]-40">
+    </textbox>
+    <textbox id='prompt' consumer='submit' margin='0' gravity='bottom-left' size-func="gui.get_viewport()[1],40"></textbox>
 </container>
diff --git a/res/layouts/console.xml.lua b/res/layouts/console.xml.lua
index ebef4b35..9d2cd876 100644
--- a/res/layouts/console.xml.lua
+++ b/res/layouts/console.xml.lua
@@ -1,3 +1,15 @@
+function submit(text)
+    local x,y,z = player.get_pos(0)
+    console.set('pos.x', x)
+    console.set('pos.y', y)
+    console.set('pos.z', z)
+    local status, result = pcall(function() return console.execute(text) end)
+    if result ~= nil then
+        document.log.text = document.log.text..tostring(result)..'\n'
+    end
+    document.prompt.text = ""
+end
+
 function on_open()
     document.prompt.focused = true
 end
diff --git a/src/logic/CommandsInterpreter.cpp b/src/logic/CommandsInterpreter.cpp
index d8238bc3..0e6d9d90 100644
--- a/src/logic/CommandsInterpreter.cpp
+++ b/src/logic/CommandsInterpreter.cpp
@@ -229,7 +229,10 @@ public:
             case ArgType::integer:
                 return typeCheck<integer_t>(arg, value, "integer");
             case ArgType::string:
-                return typeCheck<std::string>(arg, value, "string");
+                if (!std::holds_alternative<std::string>(value)) {
+                    return !arg->optional;
+                }
+                break;
         }
         return true;
     }
@@ -316,6 +319,11 @@ public:
             
             if (hasNext() && peekNoJump() != ' ') {
                 value = parseValue();
+                if (auto string = std::get_if<std::string>(&value)) {
+                    if ((*string)[0] == '$') {
+                        value = (*interpreter)[string->substr(1)];
+                    }
+                }
 
                 // keyword argument
                 if (!relative && hasNext() && peek() == '=') {
@@ -328,10 +336,9 @@ public:
             Argument* arg = nullptr;
             do {
                 if (arg) {
-                    std::cout << "skipped arg " << arg->name << std::endl;
                     if (auto string = std::get_if<std::string>(&arg->def)) {
                         if ((*string)[0] == '$') {
-                            args->put((*interpreter)[*string]);
+                            args->put((*interpreter)[string->substr(1)]);
                         } else {
                             args->put(arg->def);
                         }
diff --git a/src/logic/CommandsInterpreter.hpp b/src/logic/CommandsInterpreter.hpp
index 88b62e8f..c5686e0c 100644
--- a/src/logic/CommandsInterpreter.hpp
+++ b/src/logic/CommandsInterpreter.hpp
@@ -93,6 +93,8 @@ namespace cmd {
     public:
         CommandsInterpreter() : repository(std::make_unique<CommandsRepository>()) {}
 
+        CommandsInterpreter(const CommandsInterpreter&) = delete;
+
         CommandsInterpreter(std::unique_ptr<CommandsRepository> repository)
         : repository(std::move(repository)){}
 
diff --git a/src/logic/scripting/lua/LuaState.cpp b/src/logic/scripting/lua/LuaState.cpp
index b39d02d5..e5ff51fc 100644
--- a/src/logic/scripting/lua/LuaState.cpp
+++ b/src/logic/scripting/lua/LuaState.cpp
@@ -154,8 +154,8 @@ void lua::LuaState::loadbuffer(int env, const std::string& src, const std::strin
     }
 }
 
-int lua::LuaState::call(int argc) {
-    if (lua_pcall(L, argc, LUA_MULTRET, 0)) {
+int lua::LuaState::call(int argc, int nresults) {
+    if (lua_pcall(L, argc, nresults, 0)) {
         throw lua::luaerror(lua_tostring(L, -1));
     }
     return 1;
@@ -416,7 +416,7 @@ scripting::common_func lua::LuaState::createLambda() {
         for (const auto& arg : args) {
             pushvalue(arg);
         }
-        if (call(args.size())) {
+        if (call(args.size(), 1)) {
             auto result = tovalue(-1);
             pop(1);
             return result;
diff --git a/src/logic/scripting/lua/LuaState.hpp b/src/logic/scripting/lua/LuaState.hpp
index 7fbafed7..8b786562 100644
--- a/src/logic/scripting/lua/LuaState.hpp
+++ b/src/logic/scripting/lua/LuaState.hpp
@@ -59,7 +59,7 @@ namespace lua {
         const char* tostring(int idx);
         bool isstring(int idx);
         bool isfunction(int idx);
-        int call(int argc);
+        int call(int argc, int nresults=-1);
         int callNoThrow(int argc);
         int execute(int env, const std::string& src, const std::string& file="<string>");
         int eval(int env, const std::string& src, const std::string& file="<eval>");
diff --git a/src/logic/scripting/lua/libconsole.cpp b/src/logic/scripting/lua/libconsole.cpp
index 49a0719d..5fd9a498 100644
--- a/src/logic/scripting/lua/libconsole.cpp
+++ b/src/logic/scripting/lua/libconsole.cpp
@@ -36,8 +36,16 @@ static int l_execute(lua_State* L) {
     return 1;
 }
 
+static int l_set(lua_State* L) {
+    auto name = lua_tostring(L, 1);
+    auto value = state->tovalue(2);
+    (*engine->getCommandsInterpreter())[name] = value;
+    return 0;
+}
+
 const luaL_Reg consolelib [] = {
     {"add_command", lua_wrap_errors<l_add_command>},
     {"execute", lua_wrap_errors<l_execute>},
+    {"set", lua_wrap_errors<l_set>},
     {NULL, NULL}
 };