New-UDDYnamic -$ArgumentList[0] not working

Product: PowerShell Universal
Version: 1.5.10

error

An error occurred: Cannot index into a null array.

Endpoint: 16698f03-6cad-4aa1-9abe-85267c414728

Session: ce154625-10d0-461b-819e-50f12975e16e

File: 

Endpoint Start Line: 3

Endpoint End Line: 5

Stack Trace: at <ScriptBlock>, <No file>: line 3

example tested

New-UDPage -Name "test" -Content { 

$Var = 123 
New-UDDynamic -Content {
   new-UDTypography -Text $ArgumentList[0]
} -ArgumentList $Var

}