Script Editor

LMDA Composer uses the Monaco editor—the same editor that powers VS Code—providing a professional coding experience for Groovy and PowerShell scripts.

Language Support

Groovy
PowerShell

Groovy is the primary scripting language for LogicMonitor modules:

Full syntax highlighting for keywords, strings, and comments
Bracket matching and auto-closing
Code folding for classes and methods
String interpolation highlighting (${variable})
GString and regular expression support

// Example Groovy script
def host = hostProps.get("system.hostname")
def result = Snmp.get(host, "1.3.6.1.2.1.1.5.0")
println "SysName=${result}"
return 0

PowerShell support for Windows-based collection:

Cmdlet and function highlighting
Variable highlighting ($variable)
String and here-string support
Comment block support

# Example PowerShell script
$hostname = "##SYSTEM.HOSTNAME##"
$cpu = Get-Counter '\Processor(_Total)\% Processor Time'
Write-Host "CpuUsage=$($cpu.CounterSamples.CookedValue)"
exit 0

Switching Languages

Use the language toggle in the toolbar to switch between Groovy and PowerShell:

Click the language badge (Groovy or PowerShell) in the toolbar
If you have unsaved changes, a confirmation dialog appears
Confirm to switch and reset to the default template, or cancel to keep your current script

Editor Features

Feature	Description
Find & Replace	`Ctrl`+`F` to search. Supports regex, case-sensitive, and whole word matching. `Ctrl`+`H` for replace.
Multiple Cursors	`Alt`+Click to add cursors. `Ctrl`+`D` selects next occurrence. Edit multiple locations at once.
Code Folding	Click fold icons in the gutter to collapse methods, classes, and comment blocks.
Go to Line	`Ctrl`+`G` to jump to any line number. Essential for navigating large scripts.
Bracket Matching	Matching brackets are highlighted automatically when cursor is adjacent.
Auto-indentation	Smart indentation based on code structure.

Keyboard Shortcuts

Shortcut	Action
`Ctrl`+`F`	Find
`Ctrl`+`H`	Find & Replace
`Ctrl`+`G`	Go to Line
`Ctrl`+`D`	Select Next Occurrence
`Ctrl`+`/`	Toggle Comment
`Ctrl`+`]`	Indent Line
`Ctrl`+`[`	Outdent Line
`Alt`+`↑/↓`	Move Line Up/Down

PowerShell Token Substitution

When writing PowerShell scripts, you can use LogicMonitor’s token syntax to access device properties:

$hostname = "##SYSTEM.HOSTNAME##"
$displayName = "##SYSTEM.DISPLAYNAME##"
$customProp = "##auto.custom.property##"

When you run the script, LMDA Composer:

Detects ##PROPERTY.NAME## patterns in your code
Fetches device properties from the selected device
Substitutes tokens with actual property values
Executes the script with substituted values

Editor Settings

Customize the editor experience in Settings (Ctrl+, / Cmd+,):

Settings dialog with editor configuration options

Setting	Description
Font Size	Adjust from 10px to 24px for comfortable reading on any display
Tab Size	Set indentation width from 2 to 8 spaces (default: 2)
Word Wrap	Wrap long lines within the viewport instead of horizontal scrolling
Minimap	Toggle the code overview minimap on the right side of the editor

Working with Tabs

Each open file gets its own tab in the tab bar.

Creating New Files

Click New Script on the welcome screen
Press Ctrl+K, N / Cmd+K, N

Opening Files

Click Open File to load from your local disk
Use Import from LMX to load scripts from portal modules
Open a saved module folder with Open Module Folder

Managing Tabs

Click the × on any tab to close it
Right-click a tab for options: Rename, Close, Close Others, Close All
Tabs with unsaved changes show a dot indicator
Press Ctrl+W / Cmd+W to close the active tab

Character Limit

LogicMonitor scripts have a 64,000 character limit. The status bar displays your current count with visual warnings:

Character Count	Status
< 50,000	Normal
50,000+	Warning
60,000+	Alert
> 64,000	Error — Cannot save

Next Steps

Execution Modes Learn about Freeform, Active Discovery, Collection, and Batch modes.