Edit C:\Users\Admin\AppData\Roaming\Notepad++\functionList\autoit.xml

<?xml version="1.0" encoding="UTF-8" ?>

<NotepadPlus>
	<functionList>

<parser
			displayName="AutoIt3"
			id         ="autoit3_function"
			commentExpr="(?x)                                               # Utilize inline comments (see `RegEx - Pattern Modifiers`)
							(?is:\x23cs.*?\x23ce)                           # Multi Line Comment
						|	(?m-s:^\h*;.*?$)                                # Single Line Comment
						"
		>
			<function
				mainExpr="(?x)                                              # Utilize inline comments (see `RegEx - Pattern Modifiers`)
						(?m)^\h*                                            # optional leading whitespace
						(?i:FUNC\s+)                                        # start-of-function indicator
						\K                                                  # keep the text matched so far, out of the overall match
						[A-Za-z_]\w*                                        # valid character combination for identifiers
						\s*$[^()]*?$                                      # parentheses required, parameters optional
					"
			>
				
				<functionName>
					<nameExpr expr="[A-Za-z_]\w*" />
				</functionName>
			</function>
		</parser>
	</functionList>
</NotepadPlus>

Ms-Dos/Windows Unix Write backup

jsp File Browser version 1.2 by www.vonloesch.de