diff --git a/addons/escoria-core/game/core-scripts/esc/commands/custom.gd b/addons/escoria-core/game/core-scripts/esc/commands/custom.gd
index 2e9bea32..fbafde4a 100644
--- a/addons/escoria-core/game/core-scripts/esc/commands/custom.gd
+++ b/addons/escoria-core/game/core-scripts/esc/commands/custom.gd
@@ -81,6 +81,11 @@ func run(command_params: Array) -> int:
 	var object = escoria.object_manager.get_object(
 		command_params[0]
 	)
+	# Global variables can be substituted into the command arguments by wrapping the global
+	# name in braces.
+	for loop in command_params[3].size():
+		command_params[3][loop] = escoria.esc_compiler.replace_globals(command_params[3][loop])
+
 	object.node.get_node(command_params[1]).call(
 		command_params[2],
 		command_params[3]
diff --git a/addons/escoria-core/game/core-scripts/esc/commands/print.gd b/addons/escoria-core/game/core-scripts/esc/commands/print.gd
index e550535f..3c6403c5 100644
--- a/addons/escoria-core/game/core-scripts/esc/commands/print.gd
+++ b/addons/escoria-core/game/core-scripts/esc/commands/print.gd
@@ -24,7 +24,7 @@ func configure() -> ESCCommandArgumentDescriptor:
 # Run the command
 func run(command_params: Array) -> int:
 	# Replace the names of any globals in "{ }" with their value
-	print(escoria.logger.replace_globals(command_params[0]))
+	print(escoria.esc_compiler.replace_globals(command_params[0]))
 	return ESCExecution.RC_OK
 
 
diff --git a/addons/escoria-core/game/core-scripts/esc/commands/say.gd b/addons/escoria-core/game/core-scripts/esc/commands/say.gd
index 4c2bed58..04ef1c9f 100644
--- a/addons/escoria-core/game/core-scripts/esc/commands/say.gd
+++ b/addons/escoria-core/game/core-scripts/esc/commands/say.gd
@@ -101,7 +101,7 @@ func run(command_params: Array) -> int:
 		return ESCExecution.RC_ERROR
 
 	# Replace the names of any globals in "{ }" with their value
-	command_params[1] = escoria.logger.replace_globals(command_params[1])
+	command_params[1] = escoria.esc_compiler.replace_globals(command_params[1])
 
 	escoria.dialog_player.say(
 		command_params[0],
diff --git a/addons/escoria-core/game/core-scripts/esc/esc_compiler.gd b/addons/escoria-core/game/core-scripts/esc/esc_compiler.gd
index 7ba18108..0bd04c95 100644
--- a/addons/escoria-core/game/core-scripts/esc/esc_compiler.gd
+++ b/addons/escoria-core/game/core-scripts/esc/esc_compiler.gd
@@ -27,6 +27,8 @@ var _dialog_regex
 var _dialog_end_regex
 var _dialog_option_regex
 var _group_regex
+# Regex to match globals in debug strings
+var _globals_regex: RegEx
 
 # The currently compiled event
 var _current_event = null
@@ -82,7 +84,9 @@ func _init():
 	_dialog_option_regex.compile(ESCDialogOption.REGEX)
 	_group_regex = RegEx.new()
 	_group_regex.compile(ESCGroup.REGEX)
-
+	# Use look-ahead/behind to capture the term in braces
+	_globals_regex = RegEx.new()
+	_globals_regex.compile("(?<=\\{)(.*)(?=\\})")
 
 # Load an ESC file from a file resource
 func load_esc_file(path: String) -> ESCScript:
@@ -258,3 +262,18 @@ func _compile(lines: Array, path: String = "") -> Array:
 				]
 			)
 	return returned
+
+# Look to see if any globals (names in braces) should be interpreted
+#
+# #### Parameters
+#
+# * string: Text to log
+func replace_globals(string: String) -> String:
+	for result in _globals_regex.search_all(string):
+		var globresult = escoria.globals_manager.get_global(
+			str(result.get_string())
+		)
+		string = string.replace(
+			"{" + result.get_string() + "}", str(globresult)
+		)
+	return string
diff --git a/addons/escoria-core/game/core-scripts/log/esc_logger.gd b/addons/escoria-core/game/core-scripts/log/esc_logger.gd
index 6786e7df..225a448a 100644
--- a/addons/escoria-core/game/core-scripts/log/esc_logger.gd
+++ b/addons/escoria-core/game/core-scripts/log/esc_logger.gd
@@ -19,9 +19,6 @@ var crash_savegame_filename
 # Did we crash already?
 onready var crashed = false
 
-# Regex to match globals in debug strings
-var globals_regex: RegEx
-
 # Valid log levels
 enum { LOG_ERROR, LOG_WARNING, LOG_INFO, LOG_DEBUG, LOG_TRACE }
 
@@ -56,24 +53,6 @@ func _init():
 		File.WRITE
 	)
 
-	# Use look-ahead/behind to capture the term in braces
-	globals_regex = RegEx.new()
-	globals_regex.compile("(?<=\\{)(.*)(?=\\})")
-
-# Look to see if any globals (names in braces) should be interpreted
-#
-# #### Parameters
-#
-# * string: Text to log
-func replace_globals(string: String) -> String:
-	for result in globals_regex.search_all(string):
-		var globresult = escoria.globals_manager.get_global(
-			str(result.get_string())
-		)
-		string = string.replace(
-			"{" + result.get_string() + "}", str(globresult)
-		)
-	return string
 
 # Log a trace message
 #
@@ -88,7 +67,7 @@ func replace_globals(string: String) -> String:
 func trace(string: String, args = []):
 	if _get_log_level() >= LOG_TRACE and !crashed:
 		var argsstr = str(args) if !args.empty() else ""
-		string = replace_globals(string)
+		string = escoria.esc_compiler.replace_globals(string)
 		_log("(T)\t" + string + " \t" + argsstr)
 
 
@@ -104,7 +83,7 @@ func trace(string: String, args = []):
 # * args: Additional information
 func debug(string: String, args = []):
 	if _get_log_level() >= LOG_DEBUG and !crashed:
-		string = replace_globals(string)
+		string = escoria.esc_compiler.replace_globals(string)
 		var argsstr = str(args) if !args.empty() else ""
 		_log("(D)\t" + string + " \t" + argsstr)
 
@@ -128,7 +107,7 @@ func info(string: String, args = []):
 						argsstr.append(p.global_id)
 				else:
 					argsstr.append(str(arg))
-		string = replace_globals(string)
+		string = escoria.esc_compiler.replace_globals(string)
 		_log("(I)\t" + string + " \t" + str(argsstr))
 
 
@@ -145,7 +124,7 @@ func info(string: String, args = []):
 func warning(string: String, args = []):
 	if _get_log_level() >= LOG_WARNING and !crashed:
 		var argsstr = str(args) if !args.empty() else ""
-		string = replace_globals(string)
+		string = escoria.esc_compiler.replace_globals(string)
 		_log("(W)\t" + string + " \t" + argsstr, true)
 
 		if escoria.project_settings_manager.get_setting(
@@ -180,7 +159,7 @@ func warning(string: String, args = []):
 func error(string: String, args = [], do_savegame: bool = true):
 	if _get_log_level() >= LOG_ERROR and !crashed:
 		var argsstr = str(args) if !args.empty() else ""
-		string = replace_globals(string)
+		string = escoria.esc_compiler.replace_globals(string)
 		_log("(E)\t" + string + " \t" + argsstr, true)
 
 		if escoria.project_settings_manager.get_setting(
diff --git a/game/rooms/room03/esc/room03_bridge.esc b/game/rooms/room03/esc/room03_bridge.esc
index 48d58ac8..6796b781 100644
--- a/game/rooms/room03/esc/room03_bridge.esc
+++ b/game/rooms/room03/esc/room03_bridge.esc
@@ -1,8 +1,6 @@
 # THIS ROOMS FEATURES AN OPEN BRIDGE WITH A ***BROKEN*** BUTTON TO USE IN ORDER TO OPEN
 
-
 :setup
-custom r3_r_exit door_enabler enable_door a b c 1 2 345
 
 # If the room hasn't been visited previously, open the bridge and break the button
 > [!room3_visited]
@@ -12,6 +10,9 @@ custom r3_r_exit door_enabler enable_door a b c 1 2 345
 	# Set a global for the button state so we can write test logic for it
 	# This will start the animation with the check in the "ready:" state below.
 	set_global r3_button_broken true
+	# The parameters aren't used by the disable_door function, 
+	# they're there as an example of how to pass parameters.
+	custom r3_r_exit door_enabler disable_door a b c 1 2 345 {r3_button_broken}
 
 > [r3_bridge_closed]
 	# Make set_state IMMEDIATE to reach the final frame immediately
@@ -31,16 +32,16 @@ custom r3_r_exit door_enabler enable_door a b c 1 2 345
 #	> [r3_button_broken]
 #		set_state r3_button button_broken
 	stop
-	
+
 > [eq ESC_LAST_SCENE room4]
 	# Set the bridge closed and button fixed or else you cant get back to the left hand side
 	# if you started the game in room 4
 	set_global r3_bridge_closed true
 	set_global r3_button_broken false
-	
+
 	# Turn off the button's smoke animation
 	#set_state r3_button button_repaired true
-	
+
 	teleport player r3_r_exit
 	# Set the bridge state which will also run the bridge closing animation
 	set_state r3_bridge bridge_close true
@@ -49,7 +50,7 @@ custom r3_r_exit door_enabler enable_door a b c 1 2 345
 	# Don't make the right platform a separate object you can click. This is only valid when
 	# the bridge is open
 	set_interactive r3_right_platform false
-	set_interactive r3_r_exit true	
+	set_interactive r3_r_exit true
 	# We use a custom function to enable the collision polygon on the door
 	# to enable it to work as a door once the bridge is closed.
 	custom r3_r_exit door_enabler enable_door
@@ -66,6 +67,6 @@ custom r3_r_exit door_enabler enable_door a b c 1 2 345
 	set_state r3_button button_repaired true
 > [r3_bridge_closed]
 	# This is for when you close the bridge then go back to room 2
-	# Set the bridge closed 
+	# Set the bridge closed
 
 	set_global r3_bridge_closed true