Control panel - System actions and property types

System actions

All system actions can be accessed via the icon on the bottom of the widgets toolbar. Just drag and drop an action onto the canvas.

Name	Action
GetFilename	Returns the filename of the control panel
GetCurrentRegion	Returns the current region
GetReadFromMachine	Returns the machine this control panel is served from
GetReadFromLevelPath	Returns the level path of the level running on the read from machine
GetReadEngine	Returns the name of the read from machine
GetSendToGroup	Returns the name of the send to group
GetSendToGroupEnginesList	Returns the names of the machines in the send to group
SetRegion	Switches to a specified region
SetKeyerPreset	Applies a video keyer preset for a camera/media input
SetAdjustmentPreset	Applies an adjustment panel preset on a group
ResetAdjustmentPreset	Resets an adjustment panel preset
SetReadEngine	Changes the read from machine The send to group might change as well, as they always have to include the read from machine.
SetSendToGroup	Changes the send to group The read from machine might change as well, as it always has to be included in the send to machines.
SetReadSendToGroup	Change read from machine and send to group at the same time
ViewportShot	Requests a snapshot from the Engine viewport and displays it on an image widget
GetVideoIOImage	Requests a snapshot form the videoIO service. Requires pipeline and nodeIDs.
OpenTab	Opens a URL in a new tab
InvokeURL	Calls a URL without opening a tab
CopyToClipboard	Copies a value to the clipboard
FocusOn	Sets the focus on a specified widget
ShowToast	Shows a message in a toast notification
Debug	Sends a message to the console
Alert	Triggers a browser alert
DynamicData	Allows to subscribe to various data queries. Learn more about how to Use dynamic data in control panel
StartupActions	Triggers all actions inside System > STARTUP ACTIONS

Supported target property types

All values are auto-parsed into the most suitable JavaScript type!

To force a value to stay String wrap them in quotes:

1234 > Number
'1234' > String
- Not supported within API Calls (Code Editor)
'00123' > String (leading zeros prevent conversion)
'true' > Boolean (case-insensitive)
'[1, 2, 3]' > List/Array
'{"a": true}' OR '{"a": {"b": "true"}}' > Object
NaN → 0
undefined → null

Property type	Source	Related UE5 type names
`Boolean`	`false` \| `true` as text string	bool
`Number`	any float or integer number	byte, integer, integer64, float
`String`	any text string	FName, FString, FText
`List` (Enum, Array, …)	any `String`	Enums (any type starting with U and ending with *)
`Color`	`Color` OR individual `Number`s for Red Green Blue Alpha	FColor FLinearColor
`Transform`	`Transform` OR individual `Number`s for Position XYZ Rotation XYZ Scale XYZ	Transform
`Vector`	`Vector` OR individual `Number`s for XYZ	FVector
`Function` (Blueprint)	Custom properties with their respective property types Every argument can be controlled separately
`API Call`		-